A firefighter is standing in his uniform holding a hose.
A firefighter sits in a chair and stares at his empty hands.
The firefighter is doing a different action, standing and sitting, in each sentances. If the firefighter is holding something, he cannot also be staring at his empty hands.
exists e1 e2 x1 x2 x3.(for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_hold(e2) & n_hose(x3) & in(e1,x2) & n_uniform(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_stand(e1) & n_firefighter(x1))
exists e1 e2 s1 x1 x2 x3 x4.(at(e2,x4) & n_hand(x4) & a_empty(s1) & Theme(s1,x4) & of(x4,x1) & n_male(x1) & Actor(e2,x3) & v_stare(e2) & n_firefighter(x3) & in(e1,x2) & n_chair(x2) & Actor(e1,x1) & v_sit(e1) & n_firefighter(x1))