Here are some concepts: pass, rainbow, thunderstorm

What is a sentence about these concepts?

Sentence is below.
a passing thunderstorm produces a rainbow

Here are some concepts: cloud, float, wire

What is a sentence about these concepts?

Sentence is below.
dangerous barbed wire in front of floating clouds .

Here are some concepts: hill, lake, surround

What is a sentence about these concepts?

Sentence is below.
a lake surrounded by hills

Here are some concepts: space, spend, time

What is a sentence about these concepts?
Sentence is below.
you spend a lot of time looking at these in unknown space .