Are there any blue balls in the image?
Yes, there is a blue ball.
     src        edge_attr  dst
0      0   to the left of   11
1      0   to the left of   18
2      0   to the left of   16
3      0   to the left of   21
4      0  to the right of    2
..   ...              ...  ...
150   21   to the left of    6
151   21  to the right of   16
152   21  to the right of   14
153   21  to the right of   13
154   21  to the right of   11

[155 rows x 3 columns]