A man squatted down picking up a book.
A man bending over to pick up a baseball.
A man who squatted down to pick up a book can't be bending over to pick up a baseball at the same time.
exists e1 p1 s1 x1.(a_down(s1) & Manner(e1,s1) & exists e2 s2 x2.(a_up(s2) & Manner(e2,s2) & Theme(e2,x2) & Actor(e2,x1) & v_pick(e2) & n_book(x2)) & Topic(e1,p1) & Actor(e1,x1) & v_squat(e1) & n_man(x1))
exists e1 p1 s1 x1 x2 x3.(a_topic(x1) & Topic(e1,p1) & exists e2 s2 x4.(a_up(s2) & Manner(e2,s2) & Theme(e2,x4) & Actor(e2,x2) & v_pick(e2) & n_baseball(x4)) & a_over(s1) & Manner(e1,s1) & Actor(e1,x3) & v_bend(e1) & (x1 = x3) & (x1 = x2) & n_man(x1))