TASK DEFINITION: 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".
PROBLEM: " When Burroughs Wellcome submitted it to the FDA for approval as a treatment for AIDS.

SOLUTION: Past

PROBLEM: " Did you detect any animosity between Cain and his ex-wife in either of those meetings ? "

SOLUTION: Present

PROBLEM: Byron opens his mouth... and thinks better of it.

SOLUTION:
Present