A lady sleeps while seated in a yellow chair.
A woman has fallen asleep
A lady is a type of woman.  In order for the lady to "sleeps" she needs to have fallen asleep.
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_chair(x3) & a_yellow(s1) & Theme(s1,x3) & while(e1,x2) & n_seat(x2) & Actor(e1,x1) & v_sleep(e1) & n_lady(x1))
exists e1 p1 x1.(exists s1.(Theme(s1,x1) & a_asleep(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_fall(e1) & n_woman(x1))