On which side of the image are the glasses?
The glasses are on the left of the image.
     src        edge_attr  dst
0      0   to the left of   18
1      0   to the left of   16
2      0  to the right of    8
3      0  to the right of   23
4      1  to the right of   23
..   ...              ...  ...
140   23   to the left of   14
141   23   to the left of    1
142   23   to the left of   18
143   23  to the right of   20
144   23  to the right of   21

[145 rows x 3 columns]