A boy in a red shirts holds onto a rope as he walks.
A boy in a yellow shirt is sitting ont he sidewalk.
Yellow is not the same color as red, and you can't be sitting if you are walking.
exists e1 p1 s1 x1 x2 x3.(exists e2.(Actor(e2,x1) & v_walk(e2)) & n_male(x1) & as(e1,p1) & onto(e1,x3) & n_rope(x3) & Actor(e1,x1) & v_hold(e1) & in(x1,x2) & n_shirt(x2) & a_red(s1) & Theme(s1,x2) & n_boy(x1))
exists e1 p1 x1.(n_male(x1) & exists p2 s1 x2 x3.(exists e2 x4.((x2 = x4) & n_ont(x4) & Actor(e2,x4) & v_sit(e2)) & in(x2,x3) & n_shirt(x3) & a_yellow(s1) & Theme(s1,x3) & n_boy(x2)) & Topic(e1,p1) & Actor(e1,x1) & v_sidewalk(e1))