A man in a yellow cap and a red-sleeved jersey adjusts the sail on a sailboat.
A man is riding on a sailboat.
Someone who adjusts the sail must be riding on the sailboat.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(n_sail(x5) & Theme(e1,x5) & Actor(e1,x1) & v_adjust(e1) & on(x5,x6) & n_sailboat(x6) & in(x1,x2) & subset_of(x4,x2) & n_jersey(x4) & a_red-sleeved(s2) & Theme(s2,x4) & subset_of(x3,x2) & n_cap(x3) & a_yellow(s1) & Theme(s1,x3) & n_man(x1))
exists e1 x1 x2.(on(e1,x2) & n_sailboat(x2) & Actor(e1,x1) & v_ride(e1) & n_man(x1))