A caravan of green and red vehicles going up a mountain.
The group of vehicles are pink and blue.
A group is not necessarily a caravan. Green and red is not the same as pink and blue.
exists e1 s1 s2 s3 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & a_up(s3) & Manner(e1,s3) & Theme(e1,x4) & Actor(e1,x3) & v_go(e1) & n_mountain(x4) & (x2 = x3) & n_vehicle(x2) & a_red(s2) & Theme(s2,x2) & a_green(s1) & Theme(s1,x2) & n_caravan(x1))
exists s1 s2 x1 x2 x3 x4.(n_group(x3) & n_group(x1) & Theme(s2,x3) & a_blue(s2) & of(x3,x4) & n_vehicle(x4) & Theme(s1,x1) & a_pink(s1) & of(x1,x2) & n_vehicle(x2))