premise: A boy in an innertube in the pool splashing and smiling.
hypothesis: A boy gets a sunburn.
explanation_1: Splashing and smiling are somewhat different from getting a sunburn, although no obvious contradiction exists.
explanation_2: A boy at the  innertube in the pool cannot be getting sunburn at the same time.
explanation_3: Sunburn causes pain, so the boy would not be smiling.
premise_logic: exists e2 e1 x1 x2 x3 x4 x5 x6.(n_pool(x6) & n_pool(x3) & Actor(e2,x4) & v_smile(e2) & in(x4,x5) & in(x5,x6) & n_innertube(x5) & n_boy(x4) & Actor(e1,x1) & v_splash(e1) & in(x1,x2) & in(x2,x3) & n_innertube(x2) & n_boy(x1))
hypothesis_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_get(e1) & n_sunburn(x2) & n_boy(x1))
premise_sim: exists e2 e1 x1 x2 x3 x4 x5 x6.(v_splash(e1) & v_smile(e2) & n_pool(x6) & n_pool(x3) & n_innertube(x5) & n_innertube(x2) & n_boy(x4) & n_boy(x1) & in(x5,x6) & in(x4,x5) & in(x2,x3) & in(x1,x2) & Actor(e2,x4) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_get(e1) & n_sunburn(x2) & n_boy(x1) & Theme(e1,x2) & Actor(e1,x1))