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: A mitotic spindle forms from the what? Answer: centrosomes
answer:
A mitotic spindle forms from the centrosomes.


question:
Question: The esophagus runs a mainly straight route through the mediastinum of what? Answer: thorax
answer:
The esophagus runs a mainly straight route through the mediastinum of thorax.


question:
Question: What is a controlled scientific test that often takes place in a lab? Answer: an experiment
answer:

An experiment is a controlled scientific test that often takes place in a lab.