Are there any boys in front of the wall?
No, there is a lamp in front of the wall.
    src        edge_attr  dst
0     0  to the right of    6
1     2           behind    7
2     2  to the right of    6
3     3               on   10
4     4               on   10
5     6   to the left of    2
6     6   to the left of    0
7     6   to the left of    7
8     7      in front of    2
9     7  to the right of    6
10    7               on    0
11    8               on   10
12    9               on   10
13   10           behind    6