premise: A child holds a football and runs from other children.
hypothesis: The children are all sitting down.
explanation_1: A child can't be running from children who are sitting down
explanation_2: All the children would not be sitting id one child runs.
explanation_3: The other children that a child who holds a football and runs from could be sitting down or not, but from the information given it is not clear what they are doing when the child runs away. I do not see a contradiction.
premise_logic: exists e1 x1 x2 x3 x4 x5.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & subset_of(x4,x2) & from(x4,x5) & -(x5 = x1) & n_child(x1) & n_child(x1) & n_child(x5) & n_run(x4) & subset_of(x3,x2) & n_football(x3))
hypothesis_logic: exists e1 s1 s2 x1.(n_child(x1) & a_all(s2) & Manner(e1,s2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1))