The window of the train has what color?
The window is black.
    src        edge_attr  dst
0     0               of    9
1     0  to the right of    3
2     1  to the right of    3
3     1  to the right of    8
4     2   to the left of    5
5     2   to the left of    4
6     2   to the left of   10
7     3               on    1
8     3   to the left of    0
9     3   to the left of    1
10    4   to the left of   10
11    4  to the right of    7
12    4  to the right of    2
13    4             near    6
14    5  to the right of    7
15    5  to the right of    2
16    5  to the right of    8
17    6            above   10
18    6             near    4
19    6  to the right of    8
20    7   to the left of    5
21    7   to the left of    4
22    7   to the left of   10
23    8   to the left of    1
24    8   to the left of    5
25    8   to the left of    6
26   10            under    6
27   10               on    5
28   10  to the right of    2
29   10  to the right of    4
30   10  to the right of    7