premise: three girls take cover under their umbrellas.
hypothesis: Nobody has umbrellas.
explanation_1: Three girls have umbrellas.
explanation_2: The girls can't take cover under the umbrellas if nobody has umbrellas.
explanation_3: The subject cannot be referred to as three girls and nobody simultaneously.
premise_logic: exists e1 x1 x2 x3.(under(e1,x3) & n_umbrella(x3) & of(x3,x1) & n_thing(x1) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_cover(x2) & n_girl(x1) & card_eq_3(x1))
hypothesis_logic: -exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_umbrella(x2) & n_person(x1))