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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
of which one was
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "of which one was" is correct and usable in written English.
It can be used when referring to a specific item or instance among a group that has been previously mentioned. Example: "There were several projects completed last year, of which one was particularly successful."
✓ Grammatically correct
Science
News & Media
Alternative expressions(19)
one of which was
one of them was
among which was
such as
is equivalent to
in the wishes of
rapidly thereafter
for the immediate future
Very soon
somewhere later
one week before
at the early time
in the next weeks
during the previous years
it is important to remember
in the situation of
not yet completed
to avoid disruption
in accordance with direction from
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
We included 11 articles of which one was on LMWH in continuous venovenous hemofiltration (CVVH) and one on hemodialysis patients.
37 Two studies reported on parent outcomes of baby massage on preterm infants, of which one was an RCT.
Science
In another study, participants were given four written anecdotes from their childhoods, of which one was fabricated but sounded realistic based on background information supplied by a relative.
News & Media
To realize this, four specimens were produced, of which one was instrumented by bonding several strain gauges on the patch and Al-substrate.
This is a total of 37 tests performed on 25 variables, having five significant values, of which one was highly significant (p < 0.001).
PCR test results were recorded on 3 out of 48 RTHCs of exposed infants of which one was HIV positive.
Science
There were only two votes for the Roman style, of which one was mine.
News & Media
(Picasso can seem to have had just two, of which one was his brush).
News & Media
For the first 163 overs of it, three wickets had fallen, of which one was a run-out.
News & Media
Just a single bed in a corner, a table and two chairs, of which one was for the telephone.
News & Media
A repeat search then picks up the others, regardless of which one was used as the entry point.
Science
Expert writing Tips
Best practice
Use "of which one was" to clearly specify a single item or instance from a previously mentioned group, ensuring clarity and avoiding ambiguity.
Common error
Avoid using "of which one was" in simple sentences where a direct statement would be clearer and more concise. Simpler constructions often improve readability.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "of which one was" serves as a relative clause introducing a specific element from a previously mentioned set. Ludwig AI confirms this usage across numerous examples, highlighting its role in specifying a single item or instance. This phrase typically adds detail or focus to the narrative, drawing attention to a particular element within a larger context.
Frequent in
Science
53%
News & Media
42%
Wiki
2%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "of which one was" is a common and grammatically correct construction used to specify a single element from a previously mentioned group. Ludwig AI's analysis confirms its frequent use in scientific, news, and formal contexts, highlighting its role in providing clarity and emphasis. While versatile, it should be used judiciously, avoiding overuse in simple sentences where more direct phrasing is possible. Alternatives such as "one of which happened to be" or "among which one could be found" offer similar meanings with subtle differences in emphasis.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
one of which happened to be
Adds an element of chance or circumstance to the selection.
among which one could be found
Emphasizes the presence of the selected item within a larger set.
in which one case involved
Specifically highlights a single instance or scenario.
one example of this was
Shifts the focus to using the selected item as an illustrative example.
out of these, one consisted of
Highlights the composition of the selected item.
from those, one turned out to be
Suggests a process of discovery or unexpected outcome.
of those present, one identified as
Focuses on a specific attribute or characteristic of the selected item.
in that group, one showed signs of
Emphasizes observable indicators or qualities.
one particular instance was
Highlights a specific situation or event.
one such item included
Indicates the inclusion of a specific object or component.
FAQs
How can I use "of which one was" in a sentence?
Use "of which one was" to refer back to a group of items previously mentioned, singling out one for specific attention. For example, "There were three candidates, "of which one was" exceptionally qualified."
What are some alternatives to "of which one was"?
You can use alternatives like "one of which happened to be", "among which one could be found", or "one example of this was" depending on the specific nuance you wish to convey.
Is it correct to say "which one was" instead of "of which one was"?
While "which one was" can be grammatically correct in certain contexts, ""of which one was"" is used to specifically refer back to a group already identified, providing a clearer connection.
What's the difference between "of which one was" and "in which one was"?
"Of which one was" indicates a selection from a group, while "in which one was" usually refers to a location or state within a previously mentioned context. The choice depends on whether you're selecting or describing a condition.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested