Q: Keywords: ball, cloud, sky
What is a sentence that includes all these keywords?

A: green ball on a blue sky with clouds

Q: Keywords: eat, grass, herd, sheep
What is a sentence that includes all these keywords?

A: A herd of sheep gather together to eat green grass.

Q: Keywords: discussion, politician, student
What is a sentence that includes all these keywords?

A:
politician at discussion with the students