Given two entities as input, classify as "yes" if second entity is the part of the first entity. Otherwise classify them as "no". These are entities of meronym In linguistics, meronymy is a semantic relation between a meronym denoting a part and a holonym denoting a whole. In simpler terms, a meronym (i.e., second entity) is in a part-of relationship with its holonym (i.e., first entity).

Entity 1: plant 's stem 
 Entity 2: corm
yes

Entity 1: razor clam 
 Entity 2: molecule
no

Entity 1: lymphoma 
 Entity 2: nerve cell body

no