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: fluid 
 Entity 2: electrolyte

SOLUTION: yes

PROBLEM: Entity 1: locator function 
 Entity 2: cell

SOLUTION: no

PROBLEM: Entity 1: animal 
 Entity 2: plaque

SOLUTION:
no