instruction:
In this task you are given a sentence. You must judge whether the main verb of the sentence is in present or past tense. Label the instances as "Present" or "Past" based on your judgment. If there is no verb in the given text, answer "Present".
question:
Mr. Littleton refuses to back down.
answer:
Present


question:
Says I told you to stop.
answer:
Present


question:
They exist everywhere and nowhere.
answer:

Present