Which color is the boot the lady is wearing?
The boot is gray.
     src       edge_attr  dst
0      0  to the left of   22
1      0  to the left of   18
2      0  to the left of    2
3      0  to the left of   20
4      0  to the left of   15
..   ...             ...  ...
138   29  to the left of    6
139   29  to the left of   11
140   29  to the left of   13
141   29  to the left of   16
142   29  to the left of   28

[143 rows x 3 columns]