The boy in gray is taking pictures of his friend in the striped sweatshirt doing tricks on his skateboard.
A boy is taking pictures of a dolphin.
The boy cannot be taking pictures of both his friend and a dolphin.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_skateboard(x8) & of(x8,x1) & n_male(x1) & n_male(x1) & n_sweatshirt(x5) & a_striped(s1) & Theme(s1,x5) & n_friend(x4) & of(x4,x1) & n_boy(x1) & in(e1,x5) & on(e2,x8) & Theme(e2,x7) & Actor(e2,x6) & v_do(e2) & n_trick(x7) & (x5 = x6) & Theme(e1,x3) & Actor(e1,x1) & v_take(e1) & of(x3,x4) & n_picture(x3) & in(x1,x2) & n_gray(x2))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & of(x2,x3) & n_dolphin(x3) & n_picture(x2) & n_boy(x1))