Problem: What pioneer trail started in Independence, Missouri and ended in the Willamette Valley?
======
A: oregon trail

Problem: Which is the largest peninsula in the world?
======
A: arabian peninsula

Problem: Which leader of the British National Party appeared on Question Time in October 2009?
======
A: nick griffin

Problem: Which chemical element is named after the Danish physicist who developed the theory that electrons travel in discrete orbits around the atom's nucleus?
======
A:
bohrium