Here are some concepts: deliver, open, speech

What is a sentence about these concepts?

Sentence is below.
politician delivers a speech as he opens the trade fair

Here are some concepts: live, period, specie

What is a sentence about these concepts?

Sentence is below.
biological species is an extinct mammal that lived during geologic time period

Here are some concepts: clench, fist, portrait

What is a sentence about these concepts?

Sentence is below.
portrait of a man clenching fist

Here are some concepts: computer, invention, turn

What is a sentence about these concepts?
Sentence is below.
how to turn anything into a pdf on computer or invention