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).

Example Input: Entity 1: surface 
 Entity 2: vertex
Example Output: yes

Example Input: Entity 1: kangaroo 
 Entity 2: elongate stem
Example Output: no

Example Input: Entity 1: brain and spinal cord 
 Entity 2: vitamin e
Example Output:
yes