Misc: What queen is associated with detective stories?

Questions

eight thousand in the middle ages, where did people believe the seat of intelligence was?

eighty one what is the minimum number of degrees in an acute angle?

ethel who is the spokesperson for the exercise tapes 'tae bo'?

euphrates who did adolf hitler dictate mein kampf to while in prison?

excellency which company, during the 1984 super bowl, aired what is considered one of the best commercials in tv history?