A group of men trying to catch something in the air.
A group of men being active
If you are trying to catch something in the air, that is implying that you are being active.
exists e1 p1 x1 x2 x3 x5.(n_air(x5) & a_topic(x1) & of(x1,x2) & Topic(e1,p1) & Actor(e1,x3) & v_try(e1) & exists e2 x4.(Theme(e2,x4) & Actor(e2,x3) & v_catch(e2) & in(x4,x5) & n_thing(x4)) & (x2 = x3) & n_man(x2) & n_group(x1))
exists s1 x1 x2 x3.(a_topic(x1) & of(x1,x2) & Theme(s1,x3) & a_active(s1) & (x2 = x3) & n_man(x2) & n_group(x1))