Are there cell phones or glasses?
Yes, there is a cell phone.
    src        edge_attr  dst
0     1   to the left of    3
1     1   to the left of   16
2     1   to the left of    7
3     1   to the left of    4
4     1   to the left of   12
..  ...              ...  ...
57   16   to the left of    6
58   16   to the left of    2
59   16  to the right of    1
60   17   to the left of    4
61   17   to the left of   14

[62 rows x 3 columns]