Runners compete in a marathon.
The men sprint in the 100-meter race.
Running and sprint are different sports.
exists e1 x1 x2.(in(e1,x2) & n_marathon(x2) & Actor(e1,x1) & v_compete(e1) & n_runner(x1))
exists s1 x1 x2 x3.(n_race(x3) & a_100-meter(s1) & Theme(s1,x3) & n_sprint(x1) & of(x1,x2) & n_man(x2) & a_topic(x1) & in(x1,x3))