In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.
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Question: Sentence: Surface tension comes from the fact that particles at the surface of a liquid do not experience interactions from all directions imbalance of forces leads to what on the surface. Question: Surface tension comes from the fact that particles at the surface of a liquid do not experience interactions from all directions which leads to what on the surface?

Answer: imbalance of forces


Question: Sentence: Sexual reproduction, in general, relies on sets of cells that are precursors for eggs and sperm. Question: What kind of reproduction, in general, relies on sets of cells that are precursors for eggs and sperm?

Answer: sexual


Question: Sentence: Environmental changes is most responsible for the extinction of most species of plants and animals that have lived on earth. Question: What process is most responsible for the extinction of most species of plants and animals that have lived on Earth?

Answer:
environmental changes