Two girls are doing cartwheels as other children stand around watching.
Two boys are chasing a group of kids on bikes.
There either have to be two girls or two boys.
exists e1 p1 x1 x2 x4.(n_child(x4) & exists e3 e2 x3.(around(e2,e3) & Actor(e3,x3) & v_watch(e3) & Actor(e2,x3) & v_stand(e2) & -(x3 = x4) & n_child(x3)) & as(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_cartwheel(x2) & n_girl(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & of(x2,x3) & on(x3,x4) & n_bike(x4) & n_kid(x3) & n_group(x2) & n_boy(x1) & card_eq_2(x1))