Here are some concepts: coach, player, work

What is a sentence about these concepts?

Sentence is below.
rugby player has been working as a tackling coach

Here are some concepts: city, train, view, window

What is a sentence about these concepts?

Sentence is below.
view of a city from window of moving train

Here are some concepts: gym, run, student

What is a sentence about these concepts?

Sentence is below.
A student in black shorts runs across the gym.

Here are some concepts: gather, immigration, protest

What is a sentence about these concepts?
Sentence is below.
demonstrators gather to protest executive actions on immigration