premise: Four girls look at objects under a microscope.
hypothesis: Four boys look at objects under a microscope.
explanation_1: It is either boys or girls but cannot be both.
explanation_2: Girls can't be boys.
explanation_3: Girls are not males and cannot be called boys. Boys are not female and cannot be called girls.
premise_logic: exists e1 x1 x2 x3.(at(e1,x2) & under(x2,x3) & n_microscope(x3) & n_object(x2) & Actor(e1,x1) & v_look(e1) & n_girl(x1) & card_eq_4(x1))
hypothesis_logic: exists e1 x1 x2 x3.(at(e1,x2) & under(x2,x3) & n_microscope(x3) & n_object(x2) & Actor(e1,x1) & v_look(e1) & n_boy(x1) & card_eq_4(x1))