Teacher: 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).
Teacher: Now, understand the problem? If you are still confused, see the following example:
Entity 1: plant 
 Entity 2: leaf
Solution: yes
Reason: The answer is correct. Because the leaf is part of the plant. Therefore, here leaf is meronym and the plant is holonym.

Now, solve this instance: Entity 1: wave 
 Entity 2: material
Student:
yes