premise: A group of young soccer players run down the field after the ball.
hypothesis: Rival teams compete for the ball.
explanation_1: The players may belong to same group not of rival teams.
explanation_2: Not all teams are rival teams.
explanation_3: Players may not be acting as a rival if a group runs after a ball because the reason they run may not be to compete with each other for the ball; a player may run after a ball and refrain from actively attempting to obtain the ball if they are supporting the actions of another player trying to gain the ball.
premise_logic: exists e1 s1 x1 x2 x3 x4 x5.(n_ball(x5) & n_field(x4) & after(e1,x5) & down(e1,x4) & Actor(e1,x1) & v_run(e1) & of(x1,x2) & n_player(x2) & of(x2,x3) & n_soccer(x3) & a_young(s1) & Theme(s1,x2) & n_group(x1))
hypothesis_logic: exists e1 s1 x1 x2.(n_ball(x2) & for(e1,x2) & Actor(e1,x1) & v_compete(e1) & n_team(x1) & a_rival(s1) & Theme(s1,x1))