Do you see either bikes or batteries there?
Yes, there is a bike.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of    2
2     1   on the back of   14
3     1   to the left of    6
4     2  to the right of    0
5     2  to the right of   11
6     2  to the right of    3
7     3      standing on   15
8     3          wearing   11
9     3   to the left of    2
10    3   to the left of    7
11    4  to the right of    5
12    5          wearing   17
13    5   to the left of    4
14    5           riding   14
15    5          wearing    7
16    6  to the right of    1
17    6               on   14
18    7  to the right of    3
19    8  to the right of   15
20    8  to the right of   17
21    9  to the right of   16
22   11  to the right of    0
23   11   to the left of    2
24   13               on   14
25   15   to the left of    8
26   16   to the left of    9
27   17   to the left of    8