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".

[EX Q]: Four men exploded out.
[EX A]: Past

[EX Q]: " You HAVE to check prototypes in the field, Tyler -- both vehicles and genetic creations.
[EX A]: Present

[EX Q]: We all collected pieces of wood and started a fire to keep warm.
[EX A]:
Past