The boat carries what?
The boat carries produce.
     src        edge_attr  dst
0      0      standing on   21
1      0  to the right of   26
2      0  to the right of    9
3      0  to the right of    5
4      0  to the right of   23
..   ...              ...  ...
99    27  to the right of   18
100   27  to the right of    9
101   27  to the right of   11
102   27  to the right of   23
103   27  to the right of   26

[104 rows x 3 columns]