tv/ movies: Starfleet Commander Riker (Next Generation) plays what musical instrument?

Questions

before wwii, the new york phone book had 22 listings for what surname, and none after wwii?

of what is the word 'fortnight' a contraction?

what is a wind with a speed of 74 miles or more?

what is the 13.5 ton chime on london's tower clock?

what were more than 99.9% of all the animal species that have ever lived on earth before the coming of man?