TASK DEFINITION: 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.
PROBLEM: Question: What occurs before the endometrium thickens in estrous cycles? Answer: ovulation

SOLUTION: Ovulation occurs before the endometrium thickens in estrous cycles.

PROBLEM: Question: Early in the development of a human fetus, the skeleton is made entirely of what? Answer: cartilage

SOLUTION: Early in the development of a human fetus, the skeleton is made entirely of cartilage.

PROBLEM: Question: Which antibacterial protein is found in tears and saliva? Answer: human lysozyme

SOLUTION:
Human lysozyme is an antibacterial protein found in tears and saliva.