A man plays a yellow guitar while a cat watches him.
A man is playing a guitar
The man is playing a guitar which is yellow in color.
exists e1 p1 s1 x1 x2.(exists e2 x3.(Theme(e2,x1) & Actor(e2,x3) & v_watch(e2) & n_cat(x3)) & n_male(x1) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & a_yellow(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_man(x1))