Concepts: look, park, station, train
A: A passenger train parked outside of a station as people look on.
Q: Keywords: cheese, demonstrate, process
What is a sentence that includes all these keywords?

A: A man is demonstrating the process of making cheese at home on his stove.
Produce a sentence which mentions all of these concepts: city, cover, smog

thick smog covering the city
[Q]: Generate a sentence that includes all the following words: entrance, harbour, tower
[A]: clock tower at the entrance to harbour
CONCEPTS: beach, clean, profession

GEN: marines and profession clean a local beach
Produce a sentence which mentions all of these concepts: indicate, map, region
map of the region indicating many of the locations referred to in text