The phrase "a tag which" is correct and usable in written English.
It can be used when referring to a specific type of tag that has certain characteristics or functions.
Example: "The document includes a tag which indicates the priority level of the task."
Alternatives: "a tag that" or "a tag having".
This was not a tag, which implies a creative act.
His journey of around 1,680 miles was tracked using a tag which sends live data through the 3G mobile network.
So Bolt has a point when he criticised Woolworth's new "Bag for Good" which has a tag which says, "do not wash bag".
It was the weekend on which the Silberpfeile - or Silver Arrows - were informally christened with a tag which would endure throughout their racing life.
But geographic metadata alone only unveils a very specific facet of a tag, which leads to the need for more general purpose semantic metadata.
When controversy over their extradition was at its most raucous, government ministers rejected the "Natwest Three" soubriquet and persisted in referring to the trio as the "Enron Three" – a tag which the Conservatives ludicrously criticised as potentially prejudicial.
The cost of this unfolding epidemic has hit £26bn a year, a price tag which is set to rise alongside the rising numbers.
Every once in a while, the polymerase inserts a base with a fluorescent tag, which terminates the rebuilding process for that strand.
Julia has a tag, called an acoustic tag, which was implanted by a tuna harpooner, in 2010.
This activity is carried out by adding a new tag which is an attribute called "concern" in KDM instances (XMI files).
Each packet is associated with a start tag and a finish tag, which correspond respectively to the virtual time at which the first bit of the packet and the last bit of the packet are served in fluid fair queuing.
