Here are some concepts: city, develop, mouth

What is a sentence about these concepts?

Sentence is below.
cities developed around the mouth because of its natural harbor .

Here are some concepts: carnival, prize, win

What is a sentence about these concepts?

Sentence is below.
A girl holds a prize won at a carnival.

Here are some concepts: bathroom, cover, window

What is a sentence about these concepts?

Sentence is below.
The window of a bathroom is covered with red shutters.

Here are some concepts: city, student, teacher

What is a sentence about these concepts?
Sentence is below.
teachers and students are growing a city in the interior courtyard of their school .