premise: A bird is flapping its wings on the water.
hypothesis: The duck is swimming in the lake.
explanation_1: Not all birds are ducks. Water does not imply lake.
explanation_2: A bird can be many different types not just a duck.
explanation_3: Just because there is a bird does not mean it is a duck and just because it is flapping its wings does not mean that it is swimming.  Just because there is water does not mean it is a lake.
premise_logic: exists e1 x1 x2 x3.(n_water(x3) & Theme(e1,x2) & Actor(e1,x1) & v_flap(e1) & on(x2,x3) & n_wing(x2) & of(x2,x1) & n_thing(x1) & n_bird(x1))
hypothesis_logic: exists e1 x1 x2.(n_lake(x2) & n_duck(x1) & in(e1,x2) & Actor(e1,x1) & v_swim(e1))
premise_sim: exists e1 x1 x2 x3.(v_flap(e1) & on(x2,x3) & of(x2,x1) & n_wing(x2) & n_water(x3) & n_thing(x1) & n_bird(x1) & Theme(e1,x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_swim(e1) & n_lake(x2) & n_duck(x1) & in(e1,x2) & Actor(e1,x1))