What color is the large boat?
The boat is gray.
    src        edge_attr  dst
0     0   to the left of   20
1     0  to the right of    4
2     0               on   19
3     3   to the left of    6
4     4   to the left of    0
5     6  to the right of   13
6     6  to the right of    3
7     6   to the left of   10
8     7   to the left of    8
9     7   to the left of   15
10    8  to the right of    7
11    8   to the left of   15
12    9   to the left of   14
13   10  to the right of    6
14   13   to the left of    6
15   13  to the right of   17
16   14  to the right of    9
17   15  to the right of    8
18   15  to the right of    7
19   16   to the left of   20
20   17   to the left of   13
21   20  to the right of   16
22   20               on   11
23   20  to the right of    0