The phrase "a contention in a" is correct and usable in written English.
It can be used when discussing a disagreement or argument within a specific context or subject matter.
Example: "The article presents a contention in a debate about climate change policies."
Alternatives: "an argument in a" or "a dispute in a".
More than a few took issue with a contention in the column that people hate cellphones.
A model of bus contention in a Multi-RAID storage architecture is presented.
The Redskins made a similar contention in a workers' comp case as recently as 2012, against Darnerian McCants.
Since women have such a limited role in Saudi public life, however, it is somewhat surprising that it is their rights that have become a matter of open contention in a society that keeps most debate hidden.
The issue has been a major point of contention in a continuing lawsuit filed by the Campaign for Fiscal Equity, a civic group, which charges the state with failing to provide New York City schoolchildren with an adequate education.
Under the proposal being put forward by some Israeli geneticists, it is likely that Israeli Arab citizens and Jews of Sephardic ancestry — whose families originate in North Africa and the Middle East — would not routinely be included among those screened for BRCA mutations, a point of contention in a country where a social and ethnic rift already divides Sephardic and Ashkenazi Jews.
The growing political heft of the Taishang, the name given to the million or so Taiwanese in China who have staked their livelihoods on its expansive economy, has become a point of contention in a race that has raised existential questions about a Taiwan increasingly ensconced in Beijing's embrace.
A loss to the Horned Frogs would knock them out of contention in a hurry.
That usually is good enough to stay in contention in a major championship.
It also introduces a distributed synchronous array method (D-SAM), which combines multislot contention in a control frame with a "cooperation radius".
