Which kind of furniture is gray?
The furniture is a table.
    src        edge_attr  dst
0     0  to the right of    9
1     0   to the left of    7
2     1  to the right of    9
3     2  to the right of    4
4     4   to the left of    2
5     4  to the right of    6
6     4   to the left of    5
7     5               on    2
8     5  to the right of    4
9     6   to the left of    4
10    7  to the right of    0
11    7  to the right of    9
12    7  to the right of    8
13    8  to the right of    9
14    8   to the left of    7
15    9   to the left of    1
16    9   to the left of    0
17    9   to the left of    7
18    9   to the left of    8