The security guard is smiling.
The security guard is scowling at the bank robbers he has caught trying to get into the elevator shafts of the building
The security guard cannot be smiling and scowling at the same time.
exists e1 x1 x2.(n_guard(x1) & of(x1,x2) & n_security(x2) & Actor(e1,x1) & v_smile(e1))
exists e2 e1 e3 p1 x1 x2 x3 x4 x5 x6 x7 x8.(n_building(x8) & n_shaft(x6) & of(x6,x7) & n_elevator(x7) & n_male(x3) & n_robber(x3) & of(x3,x4) & n_bank(x4) & n_guard(x1) & of(x1,x2) & n_security(x2) & at(e1,x3) & for(e2,e3) & Topic(e3,p1) & Actor(e3,x3) & v_try(e3) & exists e4.(into(e4,x6) & of(x6,x8) & Actor(e4,x3) & v_get(e4)) & Theme(e2,x5) & Actor(e2,x3) & v_catch(e2) & (x3 = x5) & Actor(e1,x1) & v_scowl(e1))