What are the vehicles that are parked on the street near the fire hydrant?
The vehicles are cars.
    src        edge_attr  dst
0     0             near    7
1     1             near    3
2     1               on    0
3     1  to the right of    2
4     2   to the left of    1
5     2               on    3
6     2       going into    3
7     3   to the left of    7
8     3             near    1
9     4  to the right of    6
10    4  to the right of    5
11    5        parked on    3
12    5   to the left of    4
13    6   to the left of    4
14    7             near    0
15    7  to the right of    3