What is the color of the couch that is to the left of the other couch?
The couch is black.
    src        edge_attr  dst
0     0               on    9
1     0  to the right of    3
2     0               of    4
3     0   to the left of   10
4     1  to the right of    6
5     1               on   11
6     1  to the right of    9
7     2  to the right of    9
8     3   to the left of    0
9     4               on    9
10    4   to the left of   10
11    6   to the left of    1
12    6   to the left of    7
13    7  to the right of    6
14    7  to the right of   11
15    9   to the left of    2
16    9   to the left of    1
17   10  to the right of    0
18   10  to the right of    4
19   11   to the left of    7