A man is standing in an open boat, examining a small engine which runs a conveyor belt.
A man is on a yellow boat.
The color of the boat is not revealed so there is no way to know that it is yellow.
exists e3 e1 e2 s1 s2 x1 x2 x3 x4 x5 x6.(for(e1,e3) & Theme(e3,x3) & Actor(e3,x1) & v_examine(e3) & Theme(e2,x5) & Actor(e2,x4) & v_run(e2) & n_belt(x5) & of(x5,x6) & n_conveyor(x6) & (x3 = x4) & n_engine(x3) & a_small(s2) & Theme(s2,x3) & in(e1,x2) & n_boat(x2) & a_open(s1) & Theme(s1,x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists p1 x1.(exists s1 x2.(on(x1,x2) & n_boat(x2) & a_yellow(s1) & Theme(s1,x2)) & n_man(x1))