Given a sentence, generate a most likely context or previous statement. The previous statement should be relevant to the given statement.
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Question: It swings open revealing a stunned someone on her cellphone.

Answer: Someone faces a door and knocks.

Question: It rolls to a stop and stands before a door.

Answer: A crack appears in the car park outside.

Question: Someone unhooks the door, leading her inside.

Answer:
Someone starts for the door.