premise: A baby in an indoor pool is using an inflatable tube on it's on
hypothesis: The baby is swimming
explanation_1: Just because the baby is in a pool does not mean it is swimming.
explanation_2: Just because a baby is using an inflatable tube does not mean that the baby is swimming.
explanation_3: The baby can be sitting on top of the tube without it being exposed to the water in the pool, so it doesn't have to be in the water or swimming.
premise_logic: exists e1 s1 s2 s3 x1 x2 x3 x4.(Theme(s3,x1) & a_on(s3) & in(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_use(e1) & on(x4,x1) & n_thing(x1) & n_tube(x4) & a_inflatable(s2) & Theme(s2,x4) & (x2 = x3) & n_pool(x2) & a_indoor(s1) & Theme(s1,x2) & n_baby(x1))
hypothesis_logic: exists e1 x1.(n_baby(x1) & Actor(e1,x1) & v_swim(e1))