Reagan was seriously wounded by a bullet fired by John Hinckley Jr. in an attempted assassination on March 30, 1981.
Reagan was in the hospital in April of 1981.
( z1 be-located-at :ARG1 ( z2 person :name ( z3 name :op "Reagan" ) ) :ARG2 ( z4 hospital ) :time ( z5 date-entity :year 1981 :month 4 ) )