premise: A woman is tugging on a white sheet and laughing
hypothesis: The woman is changing the sheets on her bed.
explanation_1: We have no idea if this woman is changing the sheets on the bed or not. She could be cleaning the sheets or putting them away and we have no idea if she is even near a bed or not.
explanation_2: She may not be changing the sheet, rather dusting it.
explanation_3: Tugging on a white sheet and laughing does not mean she is changing bedsheets.
premise_logic: exists e1 s1 x1 x2 x3 x4.(on(e1,x2) & subset_of(x4,x2) & n_laughing(x4) & subset_of(x3,x2) & n_sheet(x3) & a_white(s1) & Theme(s1,x3) & Actor(e1,x1) & v_tug(e1) & n_woman(x1))
hypothesis_logic: exists e1 x1 x2 x3.(n_bed(x3) & of(x3,x2) & n_female(x2) & n_sheet(x2) & n_woman(x1) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_change(e1))