The man in the cowboy hat looks at the motorcycle curiously.
The man is a cowboy
Sentence two may be talking about different man.
exists e1 s1 x1 x2 x3 x4.(n_motorcycle(x4) & n_hat(x2) & of(x2,x3) & n_cowboy(x3) & n_man(x1) & a_curiously(s1) & Manner(e1,s1) & at(e1,x4) & Actor(e1,x1) & v_look(e1) & in(x1,x2))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_cowboy(x2)))