The old man in the brown hat is sitting on the bench.
The old man sitting at the beach is wearing a brown hat.
In a brown hat is the same as wearing a brown hat. Sitting on the bench is the same as sitting at the bench.
exists e1 s1 s2 x1 x2 x3.(n_bench(x3) & n_hat(x2) & a_brown(s2) & Theme(s2,x2) & n_man(x1) & a_old(s1) & Theme(s1,x1) & on(e1,x3) & Actor(e1,x1) & v_sit(e1) & in(x1,x2))
exists e2 e1 s1 s2 x1 x2 x3 x4.(n_beach(x3) & n_man(x1) & a_old(s1) & Theme(s1,x1) & Theme(e2,x4) & Actor(e2,x1) & v_wear(e2) & n_hat(x4) & a_brown(s2) & Theme(s2,x4) & at(e1,x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2))