What is the color of that door?
The door is yellow.
    src        edge_attr  dst
0     0   to the left of    8
1     0   to the left of    4
2     0   to the left of    9
3     1   to the left of   10
4     2   to the left of   11
5     2   to the left of    4
6     2   to the left of    9
7     2   to the left of    8
8     4  to the right of    0
9     4  to the right of    2
10    4   to the left of   11
11    7               on    5
12    8   to the left of   11
13    8  to the right of    2
14    8  to the right of    0
15    9  to the right of    0
16    9  to the right of    2
17    9   to the left of   11
18   10  to the right of    1
19   10               of    7
20   11  to the right of    8
21   11  to the right of    4
22   11  to the right of    2
23   11  to the right of    9