Title: On the Origin of Species.
Question: Which of Darwin's books featured a plant whose elaborate structure aided with fertilization by insects?

Title: Capacitor.
Question: What sort of capacitors are used on the second winding of a squirrel cage motor?

Title: Roman Republic.
Question: At what river was Hasdrubal Barca defeated at?

Title: War on Terror.
Question:
What fed US hysteria about terrorism?