What is the chair sitting on?
The chair is sitting on the sidewalk.
    src        edge_attr  dst
0     0   to the left of    1
1     0   to the left of   19
2     0   to the left of   15
3     1  to the right of    0
4     3   to the left of    5
5     3   to the left of   20
6     3   to the left of   11
7     3  to the right of    7
8     4   to the left of   20
9     4  to the right of    7
10    4   to the left of   16
11    5       sitting on   20
12    5  to the right of    3
13    5  to the right of   16
14    7   to the left of    4
15    7   to the left of    3
16    7   to the left of    8
17    8   to the left of   12
18    8  to the right of    7
19   10  to the right of   18
20   11  to the right of   16
21   11  to the right of    3
22   12  to the right of    8
23   12   to the left of   20
24   15   to the left of   18
25   15  to the right of    0
26   15  to the right of   19
27   16   to the left of   11
28   16  to the right of    4
29   16   to the left of    5
30   18   to the left of   10
31   18  to the right of   15
32   18  to the right of   19
33   19  to the right of    0
34   19   to the left of   15
35   19   to the left of   18
36   20  to the right of    4
37   20  to the right of    3
38   20  to the right of   12