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: What signals the secretion of gastric acid? Answer: gastrin
Gastrin signals the secretion of gastric acid.

Question: Looking directly at what celestial object can cause blindness? Answer: sun
Looking directly at the sun can cause blindness.

Question: Approximately how much larger is the radius of an atom than that of its nucleus? Answer: 10 times

Approximately 10 times much larger is the radius of an atom than that of its nucleus.