Who is holding the green sign?
The boy is holding the sign.
     src        edge_attr  dst
0      0          wearing    5
1      0   to the left of   15
2      0   to the left of   13
3      0  to the right of    6
4      0          wearing    4
..   ...              ...  ...
161   22  to the right of   11
162   22   to the left of   13
163   22   to the left of   15
164   22  to the right of    6
165   22   to the left of    7

[166 rows x 3 columns]