Misc: In dating agency adverts what does the 'S' represent in the abbreviation 'NSP'?

Questions

In 1986 First ---------- television station to televise live local programs.?

In 1999 ---------- again becomes the outermost planet.?

In 1787 Georg Simon---------- , scientist, born.?

In 1836 Andrew S.---------- , inventor of the Cable Car, born.?

In 1916 US and ---------- sign the Migratory bird treaty.?