premise: A child being watched while getting something out of a tank.
hypothesis: The tank is filled with water.
explanation_1: getting something out of a tank doesn't mean it was filled
explanation_2: It does not specify if the tank is filled with water.
explanation_3: Just because a child being watched while getting something out of a tank does not mean the tank is filled with water.
premise_logic: exists e1 e2 x1 x2 x3.(while(e1,e2) & r_out(e2) & of(e2,x3) & n_tank(x3) & Theme(e2,x2) & Actor(e2,x1) & v_get(e2) & n_thing(x2) & Theme(e1,x1) & v_watch(e1) & n_child(x1))
hypothesis_logic: exists e1 x1 x2.(n_tank(x1) & with(e1,x2) & n_water(x2) & Theme(e1,x1) & v_fill(e1))
premise_sim: exists e1 e2 x1 x2 x3.(while(e1,e2) & v_watch(e1) & v_get(e2) & r_out(e2) & of(e2,x3) & n_thing(x2) & n_tank(x3) & n_child(x1) & Theme(e2,x2) & Theme(e1,x1) & Actor(e2,x1))
hypothesis_sim: exists e1 x1 x2.(with(e1,x2) & v_fill(e1) & n_water(x2) & n_tank(x1) & Theme(e1,x1))