Please answer the following question: What key details about carlos machado can be extracted from the following bio? Bio: carlos machado is an ex world master 's champion in brazilian jiu-jitsu -lrb- bjj -rrb- born in rio de janeiro , brazil . he is the eldest of the five machado brothers , known for bjj , that also includes roger , rigan , jean jacques and john . he is also the brother-in-law of ufc fighter stephen thompson . he currently runs bjj schools across the united states .
A:
- teacher is carlos jr. . gracie , rolls gracie , carlos gracie ,- residence is farmers branch , texas , united states- students is chuck johnny lee smith norris , travis lutter , anthony perosh ,- martial art is rcj machado brazilian jiu-jitsu- name is carlos machado- website is http://www.carlosmachado.net/- birth place is rio de janeiro , brazil- rank is 8th degree red and black belt in bjj