Concepts: come, lot, smoke, train
A: Train coming down the tracks with engineer visible and lots of black smoke billowing upward
Q: Keywords: school, teenager, walk
What is a sentence that includes all these keywords?

A: The teenagers are walking to school.
Produce a sentence which mentions all of these concepts: calf, eat, hay

young calf eat hay at the ranch
[Q]: Generate a sentence that includes all the following words: feed, grass, park
[A]: a sheep feeds on grass at the national park
CONCEPTS: arrive, event, producer

GEN: tv producer arrives to the event held
Produce a sentence which mentions all of these concepts: build, grace, rainbow
building complex graced by a rainbow .