Could this place be a parking lot?
Yes, it is a parking lot.
    src        edge_attr  dst
0     1        parked on    3
1     1  to the right of    9
2     1   to the left of   11
3     1        parked in    0
4     2  to the right of    5
5     2  to the right of    9
6     4               on    3
7     5   to the left of   11
8     5   to the left of    2
9     5  to the right of    9
10    7               on    6
11    8  to the right of    9
12    8   to the left of   11
13    9        parked on    3
14    9   to the left of    8
15    9   to the left of    1
16    9   to the left of    2
17    9   to the left of    5
18   11  to the right of    8
19   11  to the right of    1
20   11  to the right of    5
21   11        parked in   10