Concepts: begin, city, sky
A: trip begins with the sinister skies above a city .
Q: Keywords: grow, know, thing
What is a sentence that includes all these keywords?

A: things you really should know before growing a beard
Produce a sentence which mentions all of these concepts: stack, train, travel

A train pouring out steam through it's smoke stack traveling down railroad tracks.
[Q]: Generate a sentence that includes all the following words: come, face, smile
[A]: Someone's face comes close and a smile passes across his face.
CONCEPTS: bathroom, feature, toilet, window

GEN: A bathroom featuring a toilet and a window.
Q: Keywords: class, locomotive, station
What is a sentence that includes all these keywords?

A:
class locomotive on a freight train at station in the winter