What is the color of the bridge near the building?
The bridge is green.
    src        edge_attr  dst
0     0             near    7
1     0            above    6
2     0  to the right of    6
3     1   to the left of    4
4     2        on top of    7
5     2               on    3
6     2        on top of    1
7     3   to the left of    4
8     4  to the right of    7
9     4  to the right of    3
10    4         crossing    0
11    4  to the right of    1
12    5            above    7
13    6             near    7
14    6      in front of    7
15    6   to the left of    0
16    7             near    6
17    7           behind    6
18    7   to the left of    4
19    7             near    0