A baseball catcher catches a ball while the umpire watches.
A little league game is underway at the baseball field
A baseball catcher is not necessarily on a little league team.
exists e1 x1 x2 x3 x4 x5.(n_watch(x4) & of(x4,x5) & n_umpire(x5) & while(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_catch(e1) & n_ball(x3) & n_catcher(x1) & of(x1,x2) & n_baseball(x2))
exists s1 s2 x1 x2 x3 x4.(n_field(x3) & of(x3,x4) & n_baseball(x4) & at(s2,x3) & Theme(s2,x1) & a_underway(s2) & n_game(x1) & of(x1,x2) & n_league(x2) & a_little(s1) & Theme(s1,x1))