Is the bird standing on the metal fence?
Yes, the bird is standing on the fence.
    src        edge_attr  dst
0     0   to the left of    7
1     1  to the right of   10
2     2      standing on   11
3     2  to the right of    5
4     5   to the left of    8
5     5   to the left of    2
6     7  to the right of   14
7     7  to the right of    0
8     7  to the right of   16
9     8  to the right of    5
10    9   to the left of   12
11   10   to the left of    1
12   10   to the left of   13
13   12  to the right of    9
14   13  to the right of   10
15   14  to the right of   16
16   14   to the left of    7
17   16   to the left of    7
18   16   to the left of   14