requirements could be viewed in terms of $3$ levels $($levels $1-3),$ including descriptions and examples of what requirements at each level should look like.

Give an example of a goal$/$requirement across these $3$ levels... i$.$e$.$ start with an example of a level $1$ requirement, then write a level $2$ requirement connected to that level $1$ requirement, and then a level $3$ requirement connected to that level $2$ requirement.