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).

Ex Input:
I descended into the deep and solemn valleys, skirted the edges of rocky precipices, and toiled over the savage monotony of the dreary table-land.

Ex Output:
I


Ex Input:
I stumbled and slipped along the hill-side, my breath labouring, and a moaning at my lips from sheer agony and weakness.

Ex Output:
I


Ex Input:
 He adds rum to the juice along with some vanilla extract.

Ex Output:

He