What is on the sidewalk?
The hydrant is on the sidewalk.
    src        edge_attr  dst
0     0   to the left of   12
1     0  to the right of    4
2     1  to the right of    4
3     1   to the left of   12
4     4   to the left of    1
5     4   to the left of   10
6     4   to the left of    0
7     7  to the right of    8
8     8   to the left of    7
9    10   to the left of   12
10   10  to the right of    4
11   10               on    9
12   12  to the right of    1
13   12  to the right of    0
14   12  to the right of   10