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.
( z0 out :ARG1 ( z1 person :name ( z2 name :op "Tyson" ) ) :ARG2 ( z3 jail :ARG1 z1 ) :time ( z4 by :op ( z5 date-entity :year 1997 ) ) )
(z0 / out-06
    :ARG1 (z1 / person
              :name (z2 / name
                        :op1 "Tyson"))
    :ARG2 (z3 / jail-01
              :ARG1 z1)
    :time (z4 / by
              :op1 (z5 / date-entity
                       :year 1997)))
Tyson was out of jail by 1997 .
z1 :name z2
z2 :op1 1
z0 :ARG1 z1
z0 :ARG2 z3
z3 :ARG1 z1
z0 :time z4
z4 :op1 z5
z5 :year 0