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: organism 
 Entity 2: nutrient

SOLUTION: no

PROBLEM: Entity 1: tea 
 Entity 2: substance

SOLUTION: yes

PROBLEM: Entity 1: copepod 
 Entity 2: antenna and structure

SOLUTION:
yes