Here are some concepts: couple, day, laugh

What is a sentence about these concepts?

Sentence is below.
attractive young couple laughing and talking on summer day .

Here are some concepts: light, switch, tree

What is a sentence about these concepts?

Sentence is below.
crowds around the tree at the switch on of illuminations and lighted christmas tree .

Here are some concepts: arrive, station, train

What is a sentence about these concepts?

Sentence is below.
subway train arrives in the station

Here are some concepts: engine, move, track, train

What is a sentence about these concepts?
Sentence is below.
The long train has a yellow and red engine and moves down the track.