Spectators observe as London Arsenal FC practices soccer on their field.
Crowd riots at soccer game and demands free food.
When a crowd riots spectators can't observe, either for safety or focus reasons. A soccer game is different than a practice.
exists e1 p1 x1 x6.(exists e2 x2 x3 x4 x5.(on(e2,x6) & Actor(e2,x2) & v_soccer(e2) & n_practice(x2) & (x2 = x5) & ne_geo_fc(x5) & (x2 = x4) & ne_geo_arsenal(x4) & (x2 = x3) & ne_geo_london(x3)) & n_field(x6) & of(x6,x1) & n_thing(x1) & as(e1,p1) & Actor(e1,x1) & v_observe(e1) & n_spectator(x1))
exists s1 s2 x1 x2 x3 x4 x5 x6 x7.(a_topic(s1) & subset_of(x5,s1) & Time(x5,x7) & n_food(x7) & Theme(s2,x6) & a_free(s2) & (x5 = x6) & n_demand(x5) & subset_of(x1,s1) & at(x1,x3) & n_game(x3) & of(x3,x4) & n_soccer(x4) & n_riot(x1) & (x1 = x2) & ne_nam_crowd(x2))