A group of bicyclists are competing in a race.
the frogs eat birds
It is either a group of bicyclists or frogs.
exists e1 x1 x2 x3.(in(e1,x3) & n_race(x3) & Actor(e1,x1) & v_compete(e1) & of(x1,x2) & n_bicyclist(x2) & n_group(x1))
exists e1 x1 x2.(n_frog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_bird(x2))