premise: The man in the black t-shirt is trying to throw something.
hypothesis: The man is throwing something to his son.
explanation_1: The fact that the man is  trying to throw something does not imply that he is throwing something to his son.
explanation_2: It is not necessary to throw it to son
explanation_3: The man can be throwing something somewhere other than to his son.
premise_logic: exists e1 p1 s1 x1 x2.(n_t-shirt(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x1) & v_throw(e2) & n_thing(x3)) & in(x1,x2))
hypothesis_logic: exists e1 x1 x2 x3.(n_son(x3) & of(x3,x1) & n_male(x1) & n_man(x1) & to(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_thing(x2))