Tyson, who served three years in jail for rape in the 1990s and who bit off part of Evander Holyfield's ear during a 1997 fight, still thinks he can be heavyweight champion again.
Tyson was out of jail by 1997.
Tyson would have had to of been out of jail in 1997 in order to have bitten off the ear of Holyfield.
( z1 out :ARG1 ( z2 person :name ( z3 name :op "Tyson" ) ) :ARG2 ( z4 jail ) :time ( z5 by :op ( z6 date-entity :year 1997 ) ) )