Who performed with 'a sign in this oregon capital marks the 45yh parallel half way between the equator and the north pole'?

What is referred to by 'a sideways handspring'? Based on the clue 'a sight of lamentation its believed to have been p...', what is the answer? Based on the clue 'a sign above the visitors clubhouse at this detroi...', what is the answer? Based on the clue 'a sign in a store window in spain may say ici on p...', what is the answer? Based on the clue 'a sign of this infection from the virus that also ...', what is the answer? Based on the clue 'a sign on the road to carlsbad caverns reads do n...', what is the answer? Based on the clue 'a sign reading children left unattended will be to...', what is the answer? What is associated with: a sign that says get in here greets you at the fog city diner located at 1300 battery st in th…