A baseman catches a baseball while a runner slides to touch the base during a game of baseball.
the players are sleeping on the grass
Catching and sliding are parts of playing baseball which you do not do while sleeping.
exists e1 p1 x1 x2 x4.(n_base(x4) & exists e2 p2 x3.(Topic(e2,p2) & Actor(e2,x3) & v_slide(e2) & exists e3 x5 x6.(during(e3,x5) & of(x5,x6) & n_baseball(x6) & n_game(x5) & Theme(e3,x4) & Actor(e3,x3) & v_touch(e3)) & n_runner(x3)) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_catch(e1) & n_baseball(x2) & n_baseman(x1))
exists e1 x1 x2.(n_grass(x2) & n_player(x1) & on(e1,x2) & Actor(e1,x1) & v_sleep(e1))