A welder dressed in green at his work station
A welder dressed in black at the bar.
Green is a different color than black, and even if their outfit is a combination of black and green, a welders's work station is not likely to be at a bar.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & at(e1,x4) & n_station(x4) & of(x4,x5) & n_work(x5) & of(x4,x1) & n_male(x1) & in(e1,x3) & n_green(x3) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_welder(x1))
exists e1 s1 x1 x2 x3.(n_bar(x3) & at(e1,x3) & Theme(e1,s1) & Theme(s1,x2) & a_black(s1) & Theme(e1,x1) & v_dress(e1) & n_welder(x1))