In this task, you are given a sentence which contains a motion and your task is to identify the physical entities involved in the motion. The input sentence can have more than one entity and also there is at least one entity that takes part in physical motion. There are two types of entities which are animate (beings that are alive) and inanimate entities (beings that are not alive).

Input: Consider Input: Two boys are playing table tennis.

Output: Two boys


Input: Consider Input: Sir Rudolph leaned over the battlements, and said: "It is too late, varlet.

Output: Sir Rudolph


Input: Consider Input:  The man helps the woman on the horse and she leads it around the arena.


Output: woman