premise: Abies spectabilis (East Himalayan fir) is a conifer species in the family Pinaceae and the genus firs. It is sometimes held to include the Bhutan fir ("A. densa") as a variety. It is found in Afghanistan, China (Tibet), northern India, Nepal, and Pakistan. It is a large tree, up to 50 m tall.
hypothesis: Abies spectabilis are usually 40m tall.
reason: It says they can get up to 50m, not what the average is. Since I picked something besides 50m, it might see any other height as automatically incorrect.