Is the cab to the right or to the left of the bus the person is to the right of?
The cab is to the left of the bus.
    src        edge_attr  dst
0     0   to the left of    2
1     0  to the right of    6
2     1   to the left of    7
3     2  to the right of    0
4     2   to the left of    9
5     2   to the left of    8
6     2  to the right of    5
7     2   to the left of   12
8     2   to the left of   11
9     3   to the left of    9
10    5               on   14
11    5   to the left of    2
12    6   to the left of   10
13    6   to the left of    0
14    7             near    8
15    7  to the right of    1
16    8  to the right of    9
17    8  to the right of    2
18    8  to the right of   11
19    8  to the right of   12
20    8             near    7
21    9  to the right of    3
22    9   to the left of    8
23    9  to the right of    2
24   10  to the right of    6
25   11  to the right of    2
26   11   to the left of    8
27   12   to the left of    8
28   12  to the right of    2
29   12          wearing   11