Based on the clue 'cheer up sleepy jean oh what can it mean to one of...', what is the answer?

What is referred to by 'cheek strap snaffle rein'? What is referred to by 'cheer for hollywood'? Based on the clue 'cheer is owned by procter gamble cheerios is owne...', what is the answer? Based on the clue 'cheer up sleepy jean oh what can it mean to a dayd...', what is the answer? What is referred to by 'cheerful or bloody 8'? Based on the clue 'cheering crowds met allied troops liberating rome ...', what is the answer? What is referred to by 'cheerios betty crocker products'? What is associated with: cheers glasses raised for this ts eliot comedy that won the 1950 tony for best play?