What's the shopping cart in front of?
The shopping cart is in front of the bus.
    src        edge_attr  dst
0     0           behind   12
1     0  to the right of   12
2     2             near   12
3     3   to the left of   16
4     3   to the left of    9
5     6   to the left of   12
6     9  to the right of   15
7     9  to the right of    3
8     9  to the right of   16
9    10             near   12
10   10   to the left of   12
11   11  to the right of   14
12   11      in front of   12
13   11   to the left of   12
14   12               on    7
15   12             near   10
16   12  to the right of    6
17   12      in front of    0
18   12          next to    2
19   12  to the right of   14
20   12  to the right of   10
21   12  to the right of   11
22   12   to the left of    0
23   12           behind   11
24   14   to the left of   11
25   14   to the left of   12
26   15   to the left of    9
27   16               in   12
28   16   to the left of    9
29   16  to the right of    3