The phrase "a pen which is" is correct and usable in written English.
It can be used when describing a specific pen and providing additional information about it.
Example: "I found a pen which is perfect for writing in fine detail."
Alternatives: "a pen that is" or "a pen which can be".
They find cubicle occupancy levels after transfer to be lowest in the group of heifers which was reared in a fully slatted pen, and highest in the group reared in a pen which was similar except for being fitted with cubicles.
Each ball is numbered, and on the day of the ball roll, everyone throws theirs into a gated pen, which is then taken up to the top of West View, the town's steepest street.
Oh, and the VAIO Z Flip comes with a stylus pen, which is useful for OneNote and the like, but with no place to store it on the laptop itself, it becomes a fad rather quickly and I had to leave it out of my commutes.
One is positively utilizing various functions that are embedded in hardware: for example, using an active stylus pen, which is distinguished as a specific touch from other general finger touches.
It also requires the use of a paper and pen which is of particular importance in the present study as 50% had injured their dominant hand [ 11].
There was no sign of a struggle in the pen, which is surrounded by an 8-foot wall.
For instance, "pen" is a universal with regard to "red pen," which is its particular (a red pen is a pen, and is essentially identical with pen, and there are other instances of pen, such as a blue pen, that are not a red pen).
Still, he hasn't touched the old cruiser bikes that hang from a butternut tree above the goat-and-chicken pen, which is a flight of fancy any way you look at it.
