What color do you think is the stroller that is made of plastic?
The stroller is black.
    src        edge_attr  dst
0     0   to the left of   12
1     0   to the left of    1
2     1  to the right of    0
3     2               of   12
4     2  to the right of    8
5     5               of   12
6     5  to the right of    6
7     5  to the right of   10
8     6   to the left of    5
9     6               of   12
10    7               of   12
11    8   to the left of    2
12   10               of   12
13   10   to the left of    5
14   12               in   11
15   12          holding    3
16   12  to the right of    0
17   13               on    3