What color do you think the door that is not unopened has?
The door has red color.
    src             edge_attr  dst
0     0  standing in front of    3
1     0        to the left of    5
2     0        to the left of    8
3     1       to the right of    6
4     2        to the left of    6
5     2       to the right of    4
6     4        to the left of    2
7     5       to the right of    0
8     6        to the left of    1
9     6       to the right of    2
10    8       to the right of    0