Is the fire hydrant gray or red?
The fire hydrant is gray.
    src        edge_attr  dst
0     0  to the right of    1
1     0   to the left of    9
2     0  to the right of    5
3     0  to the right of    4
4     0   to the left of    8
5     1   to the left of    0
6     1   to the left of    4
7     1   to the left of    3
8     3  to the right of    1
9     3  to the right of    4
10    4  to the right of    1
11    4   to the left of    0
12    4   to the left of    3
13    5   to the left of    9
14    5   to the left of    0
15    8  to the right of    0
16    9  to the right of    5
17    9  to the right of    0