Title: Symbiosis.
Question: What is it called when one symbiont lives within its partner?

Title: Economy of Greece.
Question: What three countries were ahead of Greece in 2011 with exports?

Title: Bern.
Question: What dialect is Bernese German?

Title: Frederic Chopin.
Question:
What type of music did Chopin discover for the first time while staying in Szafarnia?