TASK DEFINITION: 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).
PROBLEM: Entity 1: whale 
 Entity 2: tail

SOLUTION: yes

PROBLEM: Entity 1: poppy 
 Entity 2: flower

SOLUTION: yes

PROBLEM: Entity 1: fast - flow water 
 Entity 2: tymbal

SOLUTION:
no