instruction:
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).
question:
The Navajo, firmly in the saddle, rose with him, and Silvermane leaped through the corral gate, and out upon the stretch, lengthening out with every stride, and settling into a wild, despairing burst of speed.
answer:
The Navajo


question:
"Rennie--" That was Campbell climbing up from the raft after another weary passage across.
answer:
Campbell


question:
A person skis quickly down a snow covered hill.
answer:

person