premise: Several sports players do exercises on the field.
hypothesis: no one was on the field exercising
explanation_1: Several sports players were not on the field, exercising, according to the second sentence. First speaks of several while the second says no one.
premise_logic: exists e1 s1 x1 x2 x3 x4.(n_field(x4) & on(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_do(e1) & n_exercise(x3) & n_player(x1) & of(x1,x2) & n_sport(x2) & a_several(s1) & Theme(s1,x1))
hypothesis_logic: exists x2.(n_field(x2) & -exists e1 p1 x1.(for(p1,e1) & Actor(e1,x1) & v_exercise(e1) & on(x1,x2) & n_one(x1)))
premise_sim: exists e1 s1 x1 x2 x3 x4.(v_do(e1) & on(e1,x4) & of(x1,x2) & n_sport(x2) & n_player(x1) & n_field(x4) & n_exercise(x3) & a_several(s1) & Theme(s1,x1) & Theme(e1,x3) & Actor(e1,x1))
hypothesis_sim: exists x2.(n_field(x2) & all e1 p1 x1.(-v_exercise(e1) | -on(x1,x2) | -n_one(x1) | -for(p1,e1) | -Actor(e1,x1)))