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: fox 
 Entity 2: leg
no

Entity 1: convulsion 
 Entity 2: head
yes

Entity 1: mitochondrion 
 Entity 2: membrane system

yes