Is the telephone that is not on silver or black?
The telephone is black.
    src        edge_attr  dst
0     0  to the right of    6
1     2  to the right of    6
2     4  to the right of    9
3     4  to the right of   10
4     4  to the right of    6
5     5  to the right of    6
6     6   to the left of    2
7     6   to the left of    8
8     6   to the left of    4
9     6   to the left of    7
10    6   to the left of    5
11    6   to the left of    0
12    7  to the right of    6
13    8  to the right of    6
14    9   to the left of    4
15   10   to the left of    4