instruction:
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.
question:
Question: What is the name of the location in which a stream or river starts? Answer: source
answer:
Source is the name of the location in which a stream or river starts.


question:
Question: How does the liquid in a thermometer respond to heat or cold? Answer: expands or contracts
answer:
The liquid in a thermometer expands or contracts to respond to heat or cold.


question:
Question: Which weather condition commonly occurs along a cold front? Answer: precipitation
answer:

Precipitation commonly occur(s) along a cold front.