What's in the bag?
The tennis ball is in the bag.
    src        edge_attr  dst
0     0             near   14
1     1   to the left of    6
2     1  to the right of    9
3     2               in    0
4     2  to the right of    8
5     2  to the right of   11
6     3   to the left of    6
7     4               on    5
8     4  to the right of    8
9     5  to the right of    8
10    6  to the right of    8
11    6  to the right of    9
12    6  to the right of   11
13    6  to the right of    1
14    6  to the right of    3
15    7   to the left of   11
16    7   to the left of    9
17    8   to the left of    2
18    8   to the left of    5
19    8   to the left of    4
20    8   to the left of    6
21    9   to the left of    1
22    9   to the left of    6
23    9   to the left of   10
24    9  to the right of    7
25    9   to the left of   12
26   10  to the right of   15
27   10  to the right of    9
28   11   to the left of    2
29   11  to the right of    7
30   11   to the left of    6
31   11   to the left of   12
32   12  to the right of   11
33   12  to the right of    9
34   14          next to    0
35   14             near    0
36   15               in    9
37   15   to the left of   10