premise: children are playing with a mortar and pistil
hypothesis: THe children are playing.
explanation_1: Both children are playing.
explanation_2: The children that are playing are playing with a mortar and pistil.
explanation_3: Mortar and pistil are the items with which the children are playing
premise_logic: exists e1 x1 x2 x3 x4.(with(e1,x2) & subset_of(x4,x2) & n_pistil(x4) & subset_of(x3,x2) & n_mortar(x3) & Actor(e1,x1) & v_play(e1) & n_child(x1))
hypothesis_logic: exists e1 x1 x2.(Actor(e1,x1) & v_play(e1) & n_child(x1) & (x1 = x2) & ne_nam_the(x2))