Is the boat behind a man?
No, the boat is in front of a man.
     src        edge_attr  dst
0      0   to the left of   19
1      0   to the left of   11
2      0   to the left of   20
3      1            above   16
4      1   to the left of    5
..   ...              ...  ...
102   21          wearing    6
103   21  to the right of   12
104   21  to the right of   13
105   21  to the right of   15
106   21          holding   11

[107 rows x 3 columns]