Sentence examples for are their from inspiring English sources

"are their" is a grammatically correct phrase and can be used in written English.
It is typically used to show possession or ownership, similar to "their [noun]." Here is an example of how it can be used in a sentence: "The students were asked to return to their desks, but some of them were unsure of where their books are. Are their textbooks on the shelves or in their backpacks?".