Is the urinal both empty and white?
Yes, the urinal is empty and white.
   src        edge_attr  dst
0    0   to the left of    3
1    1               on    4
2    2  to the right of    5
3    2  to the right of    6
4    3  to the right of    0
5    5   to the left of    2
6    6               on    0
7    6   to the left of    2
8    7               by    0
9    8               on    0