The car is of what color?
The car is silver.
    src        edge_attr  dst
0     0  to the right of   10
1     0   to the left of    8
2     1  to the right of    6
3     1  to the right of    3
4     1   to the left of   12
5     3   to the left of    1
6     3  to the right of    4
7     4   to the left of    5
8     4   to the left of    3
9     4   to the left of    6
10    5  to the right of    4
11    5   to the left of   11
12    5   to the left of   12
13    6  to the right of    4
14    6   to the left of    1
15    8  to the right of   10
16    8  to the right of    0
17   10   to the left of    0
18   10   to the left of    8
19   11  to the right of    5
20   12  to the right of    5
21   12  to the right of    1