Which kind of watercraft is the dog sitting on?
The dog is sitting on the boat.
    src        edge_attr  dst
0     0        parked at   14
1     0               on   19
2     0      in front of   16
3     1  to the right of   15
4     2  to the right of   15
5     2  to the right of   16
6     2  to the right of   17
7     3  to the right of   11
8     4      parked near   14
9     5               on    7
10    6  to the right of   12
11    6          full of    0
12    6  to the right of    8
13    7          full of    5
14    7          full of    8
15    8   to the left of   19
16    8   to the left of   11
17    8   to the left of    6
18    9   to the left of   15
19    9  to the right of   18
20    9   to the left of   17
21    9   to the left of   16
22   11   to the left of    3
23   11  to the right of    8
24   11          next to   19
25   11  sitting next to   12
26   11             near   19
27   11       sitting on   12
28   12               on   19
29   12   to the left of    6
30   12   to the left of   15
31   12   to the left of   17
32   12   to the left of   16
33   12   to the left of   19
34   13               of   12
35   15   to the left of    2
36   15   to the left of    1
37   15  to the right of   17
38   15  to the right of   16
39   15  to the right of   12
40   15  to the right of    9
41   16             near   17
42   16   to the left of    2
43   16  to the right of   12
44   16   to the left of   15
45   16  to the right of    9
46   16           behind    0
47   17   to the left of   15
48   17  to the right of   12
49   17   to the left of    2
50   17          next to   16
51   17  to the right of    9
52   18   to the left of    9
53   19  to the right of   12
54   19  to the right of    8
55   19             near   11