What is “theme statement”

The definition of a theme statement can vary, but essentially it's asking you to state what the piece of writing was about — not the plot, but what sort of insight or perspective does it give on life/the world/human nature? Theme is also sometimes known as the "main idea" of a story

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- "a nonrestrictive clause functions as a modifier to a noun (that is an object, person or concept). these clauses can be described by the following three options: it is set off by comas, it contains a subject and a verbs and it adds nonessential information to the sentence.

for example, in "here is bill gates, who confounded microsoft software company" we can identify "who confounded microsoft software company" as a nonrestrictive clause modifying the noun bill gates. this clause can be describes as a nonrestrictive clause because it is separated by a comma, it adds nonessential information to identify who bill gates is and it must contain both a subject (who) and a verb (confounded)."