A man is kiteboarding in open waters.
A man is kiteboarding.
Both subjects are kiteboarding
exists e1 s1 x1 x2.(in(e1,x2) & n_waters(x2) & a_open(s1) & Theme(s1,x2) & Actor(e1,x1) & v_kiteboard(e1) & n_man(x1))
exists e1 x1.(Actor(e1,x1) & v_kiteboard(e1) & n_man(x1))