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: mycorrhiza 
 Entity 2: coat
no

Entity 1: fish 
 Entity 2: enzyme
yes

Entity 1: chemical compound 
 Entity 2: protein

no