a surfer on a white surfboard wearing a yellow shirt with one arm in the air.
A surfer in yellow sees a shark.
The first letter of a sentence cannot be a small a and a large A.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(n_air(x6) & a_topic(x1) & on(x1,x2) & in(e1,x6) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & with(x4,x5) & n_arm(x5) & card_eq_1(x5) & n_shirt(x4) & a_yellow(s2) & Theme(s2,x4) & (x2 = x3) & n_surfboard(x2) & a_white(s1) & Theme(s1,x2) & n_surfer(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_see(e1) & n_shark(x3) & in(x1,x2) & n_yellow(x2) & n_surfer(x1))