How big is the white sink?
The sink is small.
    src        edge_attr  dst
0     0   to the left of   12
1     0  to the right of    9
2     0  to the right of   16
3     0  to the right of   17
4     1   to the left of    5
..  ...              ...  ...
94   19  to the right of   18
95   20   to the left of   12
96   20               in   13
97   20  to the right of    6
98   20   to the left of   15

[99 rows x 3 columns]