Title: Department store.
Question: What store has managed to survive despite much it's competition going under?

Title: Slavs.
Question: Malyarchuk said that other Slavs "Mongoloid component" was increased during the waves of migration from what populations?

Title: Roman Republic.
Question: Around how many ships were sent into service from Greek cities?

Title: Richard Feynman.
Question:
What did Feynman investigate while working on quantum gravity?