What is in front of the tent?
The van is in front of the tent.
    src        edge_attr  dst
0     1  to the right of    3
1     3   to the left of    1
2     3  to the right of    7
3     5  to the right of   10
4     7   to the left of    3
5     7           flying    8
6     7   to the left of    9
7     7   to the left of   10
8     9  to the right of    7
9     9      in front of   10
10   10   to the left of    5
11   10           behind    9
12   10  to the right of    7