Here are some concepts: demonstrator, police, protest, stop

What is a sentence about these concepts?

Sentence is below.
a demonstrator tries to stop the riot police during one of many protests around major cities

Here are some concepts: butterfly, chase, kid

What is a sentence about these concepts?

Sentence is below.
The kid is chasing a butterfly.

Here are some concepts: boat, harbor, park

What is a sentence about these concepts?

Sentence is below.
A harbor filled with boats parked next to each other.

Here are some concepts: horse, tie, trailer

What is a sentence about these concepts?
Sentence is below.
A horse is tied to a post near some rig trailers.