A person riding a snowboard goes over a snowy ramp.
An olympic athlete competing for the snowboarding medal.
Just because a person riding a snowboard doesn't mean he is an olympic athlete
exists e1 e2 s1 x1 x2 x3 x4.(over(e2,x4) & n_ramp(x4) & a_snowy(s1) & Theme(s1,x4) & Actor(e2,x1) & v_go(e2) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_snowboard(x3) & (x1 = x2) & n_person(x1))
exists e2 e1 s1 x1 x2 x3.(n_medal(x3) & Actor(e2,x3) & v_snowboard(e2) & a_topic(x1) & for(e1,x3) & Actor(e1,x2) & v_compete(e1) & (x1 = x2) & n_athlete(x1) & a_olympic(s1) & Theme(s1,x1))