Firefighters hard at work.
The firefighters are dressed in fire gear.
fire gear are dressed during work by firefighters.
exists s1 x1 x2.(at(s1,x2) & n_work(x2) & Theme(s1,x1) & a_hard(s1) & n_firefighter(x1))
exists e1 x1 x2 x3.(n_firefighter(x1) & in(e1,x2) & n_gear(x2) & of(x2,x3) & n_fire(x3) & Theme(e1,x1) & v_dress(e1))