Is this a black cat?
Yes, this is a black cat.
    src        edge_attr  dst
0     1   to the left of    6
1     1   to the left of    4
2     2               on    3
3     2   to the left of    8
4     4  to the right of    1
5     5   to the left of    8
6     6  to the right of    1
7     8  to the right of    2
8     8  to the right of    9
9     8  to the right of    5
10    9   to the left of    8