A couple of graduate students in white suits started something on fire.
They are in red
The suits are either red or white.
exists e1 s1 s2 x1 x2 x3 x4 x5.(Theme(e1,x4) & Actor(e1,x1) & v_start(e1) & on(x4,x5) & n_fire(x5) & n_thing(x4) & in(x1,x3) & n_suit(x3) & a_white(s2) & Theme(s2,x3) & of(x1,x2) & n_student(x2) & a_graduate(s1) & Theme(s1,x2) & n_couple(x1))
exists p1 x1.(n_thing(x1) & exists x2.(in(x1,x2) & n_red(x2)))