Question: Who was the Republican Senator of Mississippi that has been in office since 2007, who in 2013 was a letter addressed to that contained ricin?
Sentence (from "The Poor-Whores Petition"): Addressed from madams such as Damaris Page and Elizabeth Cresswell, it sought to mock the perceived extravagance and licentiousness of Castlemaine and the royal court.
Relevant evidence: No