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: II ON my first dash to the Northern fighting line--Greer told me the other night--I carried supplies to an ambulance where the surgeon asked me to have a talk with an officer who was badly wounded and fretting for news of his people in the east of France.

Output: I


Input: Consider Input: Horace put his arm around Rose.

Output: arm


Input: Consider Input: A wind surfer surfs against heavy waves.


Output: surfer