Here are some concepts: kid, laugh, mud

What is a sentence about these concepts?

Sentence is below.
Four kids laugh and have fun playing in the mud.

Here are some concepts: flow, mountain, stream

What is a sentence about these concepts?

Sentence is below.
a stream flows with a meadow with mountains behind

Here are some concepts: genus, grow, rock

What is a sentence about these concepts?

Sentence is below.
biological genus grows from a crack in a rock

Here are some concepts: fall, kayak, rapid

What is a sentence about these concepts?
Sentence is below.
Man in yellow kayak falls in the rapids.