Which color is that chair?
The chair is blue.
    src        edge_attr  dst
0     0   to the left of    8
1     4   to the left of    9
2     4   to the left of    6
3     5   to the left of    7
4     5   to the left of    6
5     6  to the right of    5
6     6  to the right of    4
7     6  to the right of    9
8     7  to the right of    5
9     8  to the right of    0
10    9  to the right of    4
11    9   to the left of    6