The outfielder dives to catch the popup at center field.
An outfielder is trying to catch a ball in center field.
Trying to catch can be rephrased as dives to catch.
exists e1 p1 x1 x2.(n_popup(x2) & n_outfielder(x1) & Topic(e1,p1) & Actor(e1,x1) & v_dive(e1) & exists e2 x3 x4.(at(e2,x3) & n_field(x3) & of(x3,x4) & n_center(x4) & Theme(e2,x2) & Actor(e2,x1) & v_catch(e2)))
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_catch(e2) & in(x2,x3) & n_field(x3) & of(x3,x4) & n_center(x4) & n_ball(x2)) & n_outfielder(x1))