Is the man to the right or to the left of the boy that is riding a bike?
The man is to the left of the boy.
    src        edge_attr  dst
0     0           riding    5
1     0  to the right of    1
2     1          wearing    3
3     1               on    2
4     1  to the right of    7
5     1   to the left of    0
6     1  to the right of    6
7     1   to the left of    5
8     3  to the right of    6
9     5  to the right of    1
10    6   to the left of    1
11    6   to the left of    3
12    7               by    6
13    7   to the left of    1