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).

Q: Entity 1: thallus 
 Entity 2: or shape eye

A: no
****
Q: Entity 1: fish 
 Entity 2: enzyme

A: yes
****
Q: Entity 1: convulsion 
 Entity 2: head

A:
yes
****