A group of long-distance runners compete in a competition.
A group of runners are being chased by the police.
The runners are not being chased by the police, they are competing in a competition.
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_competition(x3) & Actor(e1,x1) & v_compete(e1) & of(x1,x2) & n_runner(x2) & a_long-distance(s1) & Theme(s1,x2) & n_group(x1))
exists e1 x1 x2 x3.(n_police(x3) & Actor(e1,x3) & Theme(e1,x1) & v_chase(e1) & of(x1,x2) & n_runner(x2) & n_group(x1))