In your own words, define the meaning of 'cyclical structure' and explain what is meant by contrasting beginnings and openings.

Basically you have a motif of something eg fruit. Then that motif gets repeated at the end. So even if you have a contrasting beginning and end you can still have like a sentence that repeats cyclically eg 'humanity can be saved' or something like that.

A theme or motif or phrase etc that recurs or goes back to the beginning, at the end

cyclical structure is like when when the end situations are in some way the same as they are at the beginning.

It can foreshadow or make you sort of guess what might happen at the end