Which color is the door?
The door is blue.
    src        edge_attr  dst
0     0  to the right of    3
1     1  to the right of   10
2     1   to the left of    8
3     2  to the right of    3
4     2   to the left of    4
5     2  to the right of    6
6     3   to the left of   13
7     3   to the left of    0
8     3   to the left of   12
9     3   to the left of   16
10    3   to the left of    2
11    3   to the left of    6
12    3   to the left of   15
13    3   to the left of   10
14    3   to the left of   11
15    3   to the left of    5
16    4  to the right of   15
17    4  to the right of   12
18    4  to the right of    2
19    4  to the right of   11
20    5  to the right of    3
21    6   to the left of    2
22    6  to the right of    3
23    7   to the left of   13
24    8  to the right of   10
25    8  to the right of    1
26   10               of    8
27   10  to the right of    3
28   10   to the left of    1
29   10   to the left of    8
30   11  to the right of    3
31   11   to the left of    4
32   12   to the left of    4
33   12  to the right of    3
34   13  to the right of    7
35   13  to the right of    3
36   15  to the right of    3
37   15   to the left of    4
38   16  to the right of    3