In this task, you are given a fact statement and question based on the fact. Your task is to generate the correct answer for the question. The answer needs to be generated using the context fact statement.

Fact: plants are a source of oxygen through photosynthesis. Question: What is a source of oxygen through photosynthesis?
sunflowers

Fact: fish lay eggs. Question: Certain species of which type of animal gives live birth?
Lizards

Fact: skeletal system is made of bones. Question: Which is most considered a part of the skeletal system?

the femur