A group of people in blue uniforms are walking.
The group of people in black uniforms are sitting at the table.
The uniforms should be either blue or black. And if the group of people are walking, they can't be sitting at the table.
exists e1 s1 x1 x2 x3.(Actor(e1,x1) & v_walk(e1) & of(x1,x2) & in(x2,x3) & n_uniform(x3) & a_blue(s1) & Theme(s1,x3) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2 x3 x4.(n_table(x4) & n_group(x1) & at(e1,x4) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & in(x2,x3) & n_uniform(x3) & a_black(s1) & Theme(s1,x3) & n_people(x2))