Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: is the stem height adjustable
Document: This is our first folder and its exactly what we were looking for. Bought this because we wanted to drive to nearby country roads and bike paths, without needing a rack. The bike needed a little spray lube in the main folding joint, but now folds and goes into the car in no time, with very little effort. I'm 5'11"  165lbs and don't feel cramped with the bar set close to its longest stem position.
This one looks cool and rides surprisingly well for what it is. The rims, cranks, shifter, derailleur, grips and the brakes are all first rate.If you need the smallest possible package, 16 or 20 inch wheels are probably the way to go. But if your looking for a good compromise for transport and ride quality, this 24 incher is awesome!
Answer: yes