The Curse of Tippecanoe

This quiz needs improvement. First, the name is Tippecanoe, with one I and two E's. Second, the unsuccessful attempt on Reagan's life occurred in 1981, when he was in office. Reagan died in 2004, but of natural causes. It's confusing and wrong to claim that there was an attempt on his life in 2004. Furthermore, what does the N/A mean in connection to George W. Bush? We know the date of a failed yet serious assassination attempt on the lives of presidents Bush and Saakashvili: it occurred in Tbilisi in 2005. I also have to wonder why failed assassination attempts on presidents Truman (1950), Nixon (1974) and Ford (who had two rather serious ones in 1975), on President-Elect Franklin D. Roosevelt (1933), on former president Theodore Roosevelt (1912), are omitted. Lastly and least importantly, I think you might want to try to explain what the Tippecanoe curse is supposed to be about in your introduction instead of just giving it seemingly as a fact.