Interested in Language
In text books or workbooks there are usually some sentences which tell you how to complete an exercise.
What are they called? Direction? Instruction? Manual? Or what?
If you click on this link you will see what I mean:
No source/self made general question
Sometimes, what you describe - an example - is included, but there is no example of a correctly completed answer on that page,
"Don't forget (call) ......... your mother. Answer "to call". This is an example.