Humberto Contreras
Humberto Contreras ( born August 21 , 1983 in Mexico City ) is a Mexican figure skater . 
<triplet> Humberto Contreras <subj> August 21, 1983 <obj> date of birth <subj> figure skater <obj> sport <triplet> Mexico City <subj> Mexican <obj> located in the administrative territorial entity <triplet> Mexican <subj> Mexico City <obj> contains administrative territorial entity