It's a very poor example. "There" is not the subject in the sentence, There are starving actors in Hollywood. , the plural "actors" is the real subject.
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tinanam0102Do you mean, What is there in Hollywood? same as What's in Hollywood? ? even without 'there'?Yes.
tinanam0102What things are (there) in the box?What are the things (there) in the box? Is this one correct?There is just an adverb of place. It can be added, but it is not necessary. It intensifies the sense of place "in the box."