Question: In what city did Amir Khan and Lamont Peterson fight for the welterweight titles in 2011?
Sentence (from "Lamont Peterson"): Previously he won the WBA (Super) and IBF light welterweight titles in 2011 by controversially defeating Amir Khan, but was later stripped of both titles; the WBA in 2012 for failing a drugs test, and the IBF in 2015 for his non-title loss to Danny García.
Relevant evidence: Yes