Is the water pipe below a fire hydrant?
Yes, the pipe is below a fire hydrant.
    src        edge_attr  dst
0     0            under    1
1     0            below    1
2     0   to the left of    6
3     0  to the right of    2
4     1            above    0
5     1      in front of   11
6     1      in front of    4
7     1      in front of    5
8     1               on    0
9     1   to the left of    9
10    1  to the right of    4
11    1               by    5
12    2   to the left of    0
13    2               by    0
14    3           behind    5
15    4           behind    5
16    4   to the left of    1
17    4           behind    1
18    5           behind   11
19    5      in front of    4
20    5           behind    1
21    6  to the right of    0
22    8   to the left of    9
23    8               on    1
24    9  to the right of    1
25    9               on    1
26    9  to the right of    8
27   10               of    1
28   11           behind    1
29   11      in front of    5