A person in a yellow shirt is stretching while on a bridge.
There is a man who is taking a nap on a natural bridge.
A person in a yellow shirt that is stretching isn't necessarily going to be taking a nap.
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_bridge(x3) & r_while(e1) & Actor(e1,x1) & v_stretch(e1) & in(x1,x2) & n_shirt(x2) & a_yellow(s1) & Theme(s1,x2) & n_person(x1))
exists p1 x1 e1 s1 x2 x3 x4 x5.((x1 = x2) & on(e1,x5) & n_bridge(x5) & a_natural(s1) & Theme(s1,x5) & Theme(e1,x4) & Actor(e1,x3) & v_take(e1) & n_nap(x4) & (x2 = x3) & n_man(x2))