What is the color of the door?
The door is blue.
    src        edge_attr  dst
0     1   to the left of   17
1     1   to the left of    3
2     1   to the left of   15
3     1   to the left of    6
4     1   to the left of   10
..  ...              ...  ...
89   18   to the left of    3
90   20   to the left of    4
91   20  to the right of   14
92   20  to the right of   18
93   20  to the right of    1

[94 rows x 3 columns]