Where is this chair?
The chair is on the floor.
    src        edge_attr  dst
0     0   to the left of    5
1     0   to the left of    4
2     0   to the left of    9
3     1      in front of    6
4     3  to the right of    4
5     4   to the left of    3
6     4  to the right of    0
7     4   to the left of    9
8     4   to the left of    5
9     4   to the left of   12
10    4  to the right of   10
11    5  to the right of    0
12    5  to the right of    4
13    6           behind    1
14    9  to the right of   10
15    9               on    5
16    9  to the right of    0
17    9  to the right of    4
18   10   to the left of    9
19   10   to the left of    4
20   12  to the right of    4