A seagull flies under another with food while three others follow.
A seagull flies under another with food while three others follow at night.
Sentence 1 is missing at night.
exists e1 p1 x1 x2 x3.(exists e2 x4.(Actor(e2,x4) & v_follow(e2) & -(x4 = x1) & n_person(x4) & card_eq_3(x4)) & n_person(x1) & while(e1,p1) & with(e1,x3) & n_food(x3) & under(e1,x2) & n_thing(x2) & Actor(e1,x1) & v_fly(e1) & n_seagull(x1))
exists e1 p1 x1 x2 x3.(exists e2 x4 x5.(at(e2,x5) & n_night(x5) & Actor(e2,x4) & v_follow(e2) & -(x4 = x1) & n_person(x4) & card_eq_3(x4)) & n_person(x1) & while(e1,p1) & with(e1,x3) & n_food(x3) & under(e1,x2) & n_thing(x2) & Actor(e1,x1) & v_fly(e1) & n_seagull(x1))