Question: What is the birthdate of this Mexican drug lord who serves as the leader of Sinaloa Cartel and for which Los Antrax provided security services?
Sentence (from "2012 Nuevo Laredo massacres"): The 2012 Nuevo Laredo massacres were a series of mass murder attacks between the allied Sinaloa Cartel and Gulf Cartel against Los Zetas in the border city of Nuevo Laredo, Tamaulipas, across the U.S.-Mexico border from Laredo, Texas.
Relevant evidence: No