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".

Q: Colin regarded him carefully and when he spoke his voice was dangerous.

A: Past
****
Q: The corridors circled deeper into the heart of the castle.

A: Past
****
Q: The abnormal activity explains your partial memory recovery.

A:
Present
****