Here are some concepts: cell, organism, unit

What is a sentence about these concepts?

Sentence is below.
the cell is the basic unit of organization for organisms .

Here are some concepts: bride, bridegroom, marriage

What is a sentence about these concepts?

Sentence is below.
a bridegroom putting a gold ring on his bride as symbol of their marriage

Here are some concepts: airport, employee, evacuate, talk, tourist

What is a sentence about these concepts?

Sentence is below.
an employee of talks to stranded tourists waiting at the airport to be evacuated

Here are some concepts: assist, astronaut, mission, robot, say

What is a sentence about these concepts?
Sentence is below.
spacecraft manufacturer says this robot could assist astronauts on a deep space mission .