A group of people running on a beach at dawn.
People practicing for marathon run
People running on a beach doesn't imply they're practicing for a marathon.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & of(x1,x2) & at(e1,x5) & n_dawn(x5) & on(e1,x4) & n_beach(x4) & Actor(e1,x3) & v_run(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & for(e1,x3) & n_run(x3) & of(x3,x4) & n_marathon(x4) & Actor(e1,x2) & v_practice(e1) & (x1 = x2) & n_people(x1))