Where is the zebra looking at?
The zebra is looking downward.
    src        edge_attr  dst
0     1   to the left of   10
1     1   to the left of    7
2     2   to the left of   10
3     2   to the left of   12
4     4   to the left of   10
5     5  to the right of   12
6     5  to the right of   11
7     5  to the right of    7
8     5   to the left of   13
9     7  to the right of    1
10    7   to the left of    5
11    8           behind   14
12    9               of   10
13   10  to the right of    1
14   10  to the right of    2
15   10  to the right of    4
16   10      in front of   14
17   10  to the right of   12
18   11               of   10
19   11   to the left of    5
20   12   to the left of    5
21   12   to the left of   10
22   12  to the right of    2
23   13               of   10
24   13  to the right of    5
25   14           behind   10
26   14      in front of    8