Cancer survivors race for a cure.
People are running
we don't know they are currently still running.
exists x1 x2 x3 x4.(a_topic(x1) & for(x1,x4) & n_cure(x4) & n_race(x1) & of(x1,x3) & n_survivor(x3) & of(x1,x2) & n_cancer(x2))
exists e1 x1.(Actor(e1,x1) & v_run(e1) & n_people(x1))