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: milkweed 
 Entity 2: barrel - shape body

SOLUTION: no

PROBLEM: Entity 1: kelp 
 Entity 2: rootstock

SOLUTION: no

PROBLEM: Entity 1: invertebrate 
 Entity 2: urine

SOLUTION:
yes