Here are some concepts: call, cloud, hydrogen

What is a sentence about these concepts?

Sentence is below.
this new image reveals a cloud of hydrogen called gum .

Here are some concepts: arrive, politician, talk

What is a sentence about these concepts?

Sentence is below.
politician speaks to journalists as he arrives prior to talks on nuclear program .

Here are some concepts: clock, vase, wall

What is a sentence about these concepts?

Sentence is below.
A clock hanging on a wall next to colorful vases.

Here are some concepts: city, cloud, move

What is a sentence about these concepts?
Sentence is below.
time lapse of clouds moving in the city