Based on the clue 'a promise of a refund if a purchased product is un...', what is the answer?

What is referred to by 'a prolonged unfulfilled desire'? Based on the clue 'a prominent identifying feature like the empire st...', what is the answer? Based on the clue 'a prominent landmark in this australian capital is...', what is the answer? Based on the clue 'a promise in gods name or an expression that takes...', what is the answer? Based on the clue 'a promise of quality or of a particular outcome', what is the answer? What is associated with: a promotional pianist for the piano maker erard this hungarians compositions included 1857s a… Based on the clue 'a pronoun or a song like alas and did my savior bl...', what is the answer? Based on the clue 'a prop for an artist s l', what is the answer?