Concepts: city, lead, way
A: smart lighting leading the way to smarter cities
Q: Keywords: switch, track, train
What is a sentence that includes all these keywords?

A: The train is coming in to the section of track near the switches.
Produce a sentence which mentions all of these concepts: attraction, cloud, day

a december day fades above tourist attraction and the clouds are tinged with color .
[Q]: Generate a sentence that includes all the following words: athlete, miss, round
[A]: athlete will miss the first rounds of campaign
CONCEPTS: flow, move, river, tree

GEN: camera moves from trees and dry grass through view of little river which flows into the frozen lake .
CONCEPTS: equation, find, give, line

GEN:
find the equation of a line perpendicular to given line and through .