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: solid 
 Entity 2: sodium hydroxide
yes

Entity 1: tendon 
 Entity 2: flower head
no

Entity 1: zone 
 Entity 2: acrosome

no