Concepts: keyboard, mouse, place
A: A computer mouse is placed next to a computer keyboard.
Q: Keywords: grow, system, tree
What is a sentence that includes all these keywords?

A: mass transportation system with tree growing out the top
Produce a sentence which mentions all of these concepts: celebration, end, firework

fireworks ended a day full of patriotic entertainment and celebrations
[Q]: Generate a sentence that includes all the following words: hat, lake, portrait
[A]: portrait of beautiful woman in black hat near a lake
CONCEPTS: building, change, time

GEN: the expanse of low buildings can not have changed much since time .
[Q]: Generate a sentence that includes all the following words: frog, lie, pond
[A]:
frog lying still in a pond