Do you see boats there?
Yes, there is a boat.
    src        edge_attr  dst
0     0   to the left of   13
1     0   to the left of    2
2     0   to the left of   12
3     2  to the right of    0
4     2            above   10
5     2             near    5
6     3   to the left of    8
7     3               in    7
8     4               in   10
9     4   to the left of    5
10    5  to the right of   15
11    5             near    2
12    5  to the right of    4
13    5  to the right of   14
14    5  to the right of    6
15    6   to the left of    5
16    6  to the right of   12
17    6               on    2
18    7            above   10
19    8  to the right of    3
20    8        on top of    2
21    8               on    2
22    9   to the left of   12
23    9               in   10
24    9   to the left of   13
25   10            below    2
26   11               on   10
27   11               in   10
28   11      in front of    2
29   12  to the right of    9
30   12  to the right of    0
31   12  to the right of   13
32   12   to the left of   15
33   12               in   10
34   12   to the left of    6
35   13  to the right of    9
36   13  to the right of    0
37   13   to the left of   12
38   13               in   10
39   14               in   10
40   14      floating in   10
41   14  to the right of   15
42   14   to the left of    5
43   15               in   10
44   15  to the right of   12
45   15      floating in   10
46   15   to the left of   14
47   15   to the left of    5
48   16               in    7