In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.
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Question: Question: When different types of tissues work together to perform a unique function, what do they form? Answer: organ

Answer: When different types of tissues work together to perform a unique function, they form organ.

Question: Question: What is the smallest unit of time commonly based on? Answer: second

Answer: Second is the smallest unit of time commonly based on.

Question: Question: Haumea, which is the third brightest kuiper belt object has an odd oval shape which is probably caused by what? Answer: extremely rapid rotation

Answer:
Haumea, which is the third brightest kuiper belt object has an odd oval shape which is probably caused by extremely rapid rotation.