Q: Take the last name of a famous 20th-century American. The 5th, 6th, 7th, and 1st, 2nd, and 3rd letters, in that order, name a European capital. Who is the person, and what capital is it?
Change one letter in the capital and rearrange to get a country. Repeat the process to get an element. Repeat the process one last time to get some gemstones.