Based on the clue 'a tornado that forms over a lake or ocean', what is the answer?

What is referred to by 'a topic or motif'? Based on the clue 'a torchiere is a standing one of these that often ...', what is the answer? Based on the clue 'a tormentor is a side curtain in a theater to prev...', what is the answer? Based on the clue 'a tornado is typically a tube or this shaped cl...', what is the answer? What is associated with: a tornado that struck rochester minnesota in 1883 inspired 3 doctors with this last name to op… Based on the clue 'a toronto institution is somewhat redundantly name...', what is the answer? Based on the clue 'a toronto pro sports team', what is the answer? What is associated with: a total deflation in my gut noted one astronomer after seeing blurred photos taken by this dev…