Which kind of animal is flying in the sky?
The animal is a seagull.
    src        edge_attr  dst
0     0  to the right of   10
1     1   to the left of   12
2     2  to the right of    9
3     3   on the side of    7
4     4        flying in    5
5     4               in    5
6     4            above    6
7     5           behind    6
8     6               in    5
9     6            below   13
10    7  to the right of   11
11    7  to the right of    9
12    8   on the side of    7
13    9   to the left of    7
14    9   to the left of    2
15   10   to the left of    0
16   11   to the left of    7
17   12  to the right of    1
18   13        flying in    5
19   13            above    6