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: bloodworm 
 Entity 2: cell
no

Entity 1: downy woodpecker 
 Entity 2: stolon
no

Entity 1: whale 
 Entity 2: lung

yes