The candle is on what?
The candle is on the desk.
    src        edge_attr  dst
0     0               on    1
1     0  to the right of    5
2     0   to the left of    3
3     0  to the right of    7
4     0   to the left of    9
5     1   to the left of    9
6     1  to the right of    5
7     1  to the right of    7
8     3  to the right of    0
9     5  to the right of    8
10    5   to the left of    1
11    5   to the left of    0
12    6  to the right of    8
13    7   to the left of    1
14    7   to the left of    0
15    8               on    7
16    8   to the left of    6
17    8   to the left of    5
18    9  to the right of    0
19    9  to the right of    1
20    9           beside    1