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: acid 
 Entity 2: artery
no

Entity 1: pregnancy 
 Entity 2: fleshy tissue
no

Entity 1: organic compound 
 Entity 2: carbon skeleton

yes