Is there either a zebra or a fence?
No, there are no zebras or fences.
    src        edge_attr  dst
0     1       running on   10
1     1       playing on   10
2     1           biting    0
3     1         carrying    0
4     1          holding    0
5     2  to the right of    7
6     4  to the right of    9
7     5  to the right of    8
8     5  to the right of    7
9     6  to the right of    9
10    7   to the left of    5
11    7   to the left of    2
12    7  to the right of    8
13    8   to the left of    7
14    8   to the left of    5
15    9   to the left of    6
16    9   to the left of    4