A boat goes out to see while someone watches on the beach.
The boat is white.
A boat does not necessarily have to be white.
exists e1 p1 s1 x1 x3.(n_beach(x3) & a_out(s1) & Manner(e1,s1) & Topic(e1,p1) & Actor(e1,x1) & v_go(e1) & exists e2 p2.(exists e3 x2.(on(e3,x3) & Actor(e3,x2) & v_watch(e3) & n_person(x2)) & while(e2,p2) & Actor(e2,x1) & v_see(e2)) & n_boat(x1))
exists s1 x1.(n_boat(x1) & Theme(s1,x1) & a_white(s1))