Do you see dogs or cats that are lying?
No, there is a dog but it is standing.
    src        edge_attr  dst
0     1   to the left of    4
1     1   to the left of    8
2     1               on   15
3     2   to the left of   11
4     2  to the right of   16
..  ...              ...  ...
76   19   to the left of   11
77   19  to the right of   12
78   19  to the right of   10
79   19   to the left of    6
80   19  to the right of    5

[81 rows x 3 columns]