A surgeon and two assistants perform an operation.
A surgical team performed an operation.
A surgeon is usually part of a surgical team
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_perform(e1) & n_operation(x3) & n_assistant(x1) & card_eq_2(x1) & of(x1,x2) & n_surgeon(x2))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_operation(x2) & n_team(x1) & a_surgical(s1) & Theme(s1,x1))