A man is sweeping trash into a pan while a group of people are walking by.
A woman is sweeping trash into a pan while a group of people are walking by.
The person sweeping trash can't be both a man and a woman.
exists p1 p2 x1 x2.(exists e1 s2 x4 x5.(a_by(s2) & Manner(e1,s2) & Actor(e1,x4) & v_walk(e1) & of(x4,x5) & n_people(x5) & n_group(x4)) & while(p1,p2) & into(p1,x2) & n_pan(x2) & exists s1 x3.((x1 = x3) & n_trash(x3) & a_sweeping(s1) & Theme(s1,x3)) & n_man(x1))
exists p1 p2 x1 x2.(exists e1 s2 x4 x5.(a_by(s2) & Manner(e1,s2) & Actor(e1,x4) & v_walk(e1) & of(x4,x5) & n_people(x5) & n_group(x4)) & while(p1,p2) & into(p1,x2) & n_pan(x2) & exists s1 x3.((x1 = x3) & n_trash(x3) & a_sweeping(s1) & Theme(s1,x3)) & n_woman(x1))