Are there either any benches or collars in this scene?
Yes, there is a collar.
    src        edge_attr  dst
0     0  to the right of   11
1     2  to the right of    7
2     4  to the right of    9
3     4               on    5
4     5  to the right of    8
5     5  to the right of    9
6     6  to the right of    9
7     6               on   11
8     7   to the left of    2
9     8   to the left of    5
10    9               of   12
11    9   to the left of    6
12    9   to the left of    4
13    9   to the left of    5
14   11   to the left of    0
15   12          wearing    1