The little island is surrounded by what?
The island is surrounded by the water.
   src        edge_attr  dst
0    0      surrounding    1
1    0      surrounding    3
2    1    surrounded by    0
3    1      floating on    0
4    2            above    5
5    2            above    3
6    3    surrounded by    0
7    3  to the right of    5
8    3            below    6
9    5   to the left of    3