The sign indicates a marker for The Arlington Line.
There is a sign outdoors.
The sign is outdoors. The Arlington Line is outdoors.
exists e1 x1 x2 x3 x4.(ne_org_line(x3) & (x3 = x4) & ne_org_arlington(x4) & n_sign(x1) & Theme(e1,x2) & Actor(e1,x1) & v_indicate(e1) & for(x2,x3) & n_marker(x2))
exists p1 x1 x2 x3.((x1 = x2) & Time(x2,x3) & n_outdoors(x3) & n_sign(x2))