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: What is formed when a subducting plate flows under another tectonic plate? Answer: volcanic arc

Answer: A volcanic arc is formed when a subducting plate flows under another tectonic plate.


Question: Question: What's it called when the reaction is sped up until equilibrium is established? Answer: favoring

Answer: What's it called favoring the reaction is sped up until equilibrium is established.


Question: Question: How many types of bosons are there? Answer: four

Answer:
There are four types of bosons.