Are there buses in front of the grassy hill?
No, there is a train in front of the hill.
    src        edge_attr  dst
0     0  to the right of   10
1     1  to the right of   10
2     2   to the left of    7
3     3   to the left of   11
4     3  to the right of   10
5     3      in front of   10
6     6   to the left of    9
7     6  to the right of   10
8     6   to the left of   11
9     6   to the left of    7
10    7  to the right of    2
11    7  to the right of    6
12    7   to the left of   11
13    9   to the left of   11
14    9  to the right of    6
15   10   to the left of    1
16   10   to the left of    0
17   10   to the left of    6
18   10   to the left of    3
19   11  to the right of    9
20   11  to the right of    6
21   11  to the right of    3
22   11  to the right of    7