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".
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Question: It opens on a wide white corridor lined with red doors, which look almost decorative compared to the gray ones on the upper floors.

Answer: Present


Question: The smile froze on Lisa's face.

Answer: Past


Question: The air split again with another cannon blast, this time to their rear.

Answer:
Past