Are the houses on the right or on the left?
The houses are on the left of the image.
    src        edge_attr  dst
0     0  to the right of    9
1     1               of    7
2     1   to the left of    5
3     2   to the left of    5
4     2               of    7
5     3   to the left of    9
6     5  to the right of    2
7     5  to the right of    1
8     5  to the right of   12
9     5               by    6
10    5  to the right of    7
11    7               on    8
12    7   to the left of    5
13    9               by    8
14    9  to the right of   11
15    9   to the left of    0
16    9  to the right of    3
17   11   to the left of    9
18   12   to the left of    5