What color is the oven made of metal?
The oven is black.
    src       edge_attr  dst
0     1  to the left of   18
1     1  to the left of   10
2     1  to the left of    7
3     1  to the left of   17
4     2              on   12
..  ...             ...  ...
86   22  to the left of    7
87   22  to the left of   12
88   23  to the left of    7
89   23  to the left of   10
90   23  to the left of   17

[91 rows x 3 columns]