premise: A woman playing with play equipment while a child looks on.
hypothesis: Mother demonstrates how to use equipment to her son.
explanation_1: woman doesn't mean mother
explanation_2: A women does not imply a Mother. Playing with equipment does not imply that she is demonstrating. A child does not imply that it is her son.
explanation_3: The woman and child aren't said to be related at all and the child's gender isn't given, so you can't be sure they are a mother and her son. She could be playing with the equipment for fun; there is nothing indicating she demostrates how to use the equipment to the child.
premise_logic: exists e2 e1 p1 x1 x2 x3 x4 x5.(exists s1.(Theme(s1,x1) & a_on(s1)) & Topic(e2,p1) & Actor(e2,x1) & v_look(e2) & while(e1,x5) & n_child(x5) & with(e1,x4) & n_play(x4) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_equipment(x3) & (x1 = x2) & n_woman(x1))
hypothesis_logic: exists e1 x1 x2 x5.(ne_nam_mother(x1) & Topic(e1,x2) & Actor(e1,x1) & v_demonstrate(e1) & n_manner(x2) & exists e2 x3 x4.(Theme(e2,x4) & Actor(e2,x3) & v_use(e2) & to(x4,x5) & n_equipment(x4)) & n_son(x5) & of(x5,x2) & n_female(x2))
premise_sim: exists e2 e1 p1 x1 x2 x3 x4 x5.(with(e1,x4) & while(e1,x5) & v_play(e1) & v_look(e2) & n_woman(x1) & n_play(x4) & n_equipment(x3) & n_child(x5) & exists s1.(a_on(s1) & Theme(s1,x1)) & Topic(e2,p1) & Theme(e1,x3) & Actor(e2,x1) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists e1 x1 x2 x5.(v_demonstrate(e1) & of(x5,x2) & ne_nam_mother(x1) & n_son(x5) & n_manner(x2) & n_female(x2) & exists e2 x3 x4.(v_use(e2) & to(x4,x5) & n_equipment(x4) & Theme(e2,x4) & Actor(e2,x3)) & Topic(e1,x2) & Actor(e1,x1))