Q: Keywords: heron, perch, tree
What is a sentence that includes all these keywords?

A: wary heron perched in a tree

Q: Keywords: church, rock, side
What is a sentence that includes all these keywords?

A: the small old and rusty gate of the old church with some ruined rocks on the side

Q: Keywords: change, corner, guitar
What is a sentence that includes all these keywords?

A:
The young man is playing guitar on the street-corner for change.