What is in front of the bench?
The fence is in front of the bench.
    src        edge_attr  dst
0     0  to the right of    7
1     0  to the right of    6
2     3      in front of    5
3     3      in front of    4
4     3             near    4
5     4             near    5
6     4             near    3
7     4           behind    3
8     5             near    4
9     5               in    1
10    5           behind    3
11    5             near    8
12    6  to the right of    7
13    6   to the left of    0
14    7   to the left of    6
15    7   to the left of    0
16    8             near    5