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: motor vehicle exhaust 
 Entity 2: leaf petiole
no

Entity 1: larvae 
 Entity 2: tail region
yes

Entity 1: crab 
 Entity 2: bristle

yes