sank / luxury / which / ship / 1912 / in
Which luxury ship sank in 1912? - The Titanic
water / oil / what / mix / you / happens / when / and
What happens when you mix water and oil? - They separate
went / composer / which / deaf ?
Which composer went deaf? - Bethoven
smile / whose / famous / is
Whose smile is famous? - Mona Lisa's
invented / who / the world wide web?
Who invented the world wide web? - Tim Berners-Lee