What kind of device is the child holding?
The child is holding the mobile phone.
     src        edge_attr  dst
0      0   to the left of    5
1      1   to the left of    7
2      1   to the left of    5
3      1   to the left of   27
4      1   to the left of   20
..   ...              ...  ...
116   31   to the left of   16
117   31  to the right of   21
118   31   to the left of    2
119   31   to the left of   15
120   31  to the right of   11

[121 rows x 3 columns]