A couple of graduate students in white suits started something on fire.
The students are  smart
There is no way to know if the students are smart based on starting something on fire.
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 s1 x1.(n_student(x1) & Theme(s1,x1) & a_smart(s1))