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: tree 
 Entity 2: pierce - suck mouth part
yes

Entity 1: tracheal system 
 Entity 2: spiracle
yes

Entity 1: aphid 
 Entity 2: white spot

yes