Three small children in yellow shirts and one in a red shirt are rollerblading on a shiny marble courtyard.
Three children are skateboarding.
cant be skateboarding and rollerblading at the same time
exists e1 s1 s2 s3 s4 x1 x2 x3 x4 x5 x6 x7.(on(e1,x6) & n_courtyard(x6) & of(x6,x7) & n_marble(x7) & a_shiny(s4) & Theme(s4,x6) & Actor(e1,x1) & v_rollerblade(e1) & subset_of(x4,x1) & in(x4,x5) & n_shirt(x5) & a_red(s3) & Theme(s3,x5) & n_thing(x4) & card_eq_1(x4) & subset_of(x2,x1) & in(x2,x3) & n_shirt(x3) & a_yellow(s2) & Theme(s2,x3) & n_child(x2) & a_small(s1) & Theme(s1,x2) & card_eq_3(x2))
exists e1 x1.(Actor(e1,x1) & v_skateboard(e1) & n_child(x1) & card_eq_3(x1))