Do you see both windows and cars?
Yes, there are both a window and a car.
    src        edge_attr  dst
0     1   to the left of    5
1     1   to the left of   10
2     1  to the right of    9
3     1  to the right of   13
4     2   to the left of   13
5     2   to the left of    6
6     5  to the right of    1
7     5  to the right of    9
8     5   to the left of   10
9     5  to the right of   13
10    6   to the left of    9
11    6  to the right of    2
12    9  to the right of    6
13    9   to the left of    1
14    9  to the right of   13
15    9   to the left of    5
16   10  to the right of    1
17   10  to the right of    5
18   13   to the left of    9
19   13   to the left of    1
20   13   to the left of    5
21   13  to the right of    2