Which color is the boat on the right side?
The boat is blue.
    src        edge_attr  dst
0     1   to the left of   12
1     2  to the right of   12
2     3   to the left of   12
3     3               on   12
4     5  to the right of   11
5     5  to the right of    7
6     6   to the left of   12
7     7   to the left of    5
8     9  to the right of   12
9    11   to the left of    5
10   11               on    7
11   12   to the left of    9
12   12   to the left of   14
13   12  to the right of    3
14   12   to the left of    2
15   12  to the right of    1
16   12  to the right of    6
17   14               on   12
18   14  to the right of   12