Is the red truck to the right or to the left of the person in the middle?
The truck is to the right of the man.
    src        edge_attr  dst
0     1   to the left of   14
1     1   to the left of   13
2     1  to the right of    7
3     1   to the left of   12
4     1   to the left of    8
5     2   to the left of   16
6     4  to the right of    7
7     4  to the right of   11
8     7   to the left of   11
9     7   to the left of    4
10    7   to the left of   13
11    7   to the left of    1
12    8  to the right of    1
13    9   to the left of   12
14   10  to the right of   12
15   11  to the right of    7
16   11   to the left of    4
17   12   to the left of   10
18   12  to the right of    9
19   12   to the left of   14
20   12  to the right of    1
21   13  to the right of    1
22   13  to the right of    7
23   14  to the right of    1
24   14  to the right of   12
25   16  to the right of    2