Question: Claudia Ochoa  Félix was rumored to be a leader among which other drug lords?
Sentence (from "Los Ántrax"): The group was led by the drug lords Jesús Peña ("El 20") and Rodrigo Aréchiga Gamboa ("El Chino Ántrax"), and they are responsible for a number of homicides and for providing armed security services to Ismael "El Mayo" Zambada.
Relevant evidence: Yes