Title: Jehovah%27s Witnesses.
Question: When Russell met Nelson H. Barbour in 1876, they jointly produced what book?

Title: Computer.
Question: What was the profession of Pierre Jaquet-Droz?

Title: London.
Question: How many World Heritage Sites can be found in London?

Title: Adolescence.
Question:
What view towards cognitive development during adolescence did Piaget take?