What is the name of the item of furniture to the left of the book?
The piece of furniture is a shelf.
    src        edge_attr  dst
0     1     hanging from    3
1     1  to the right of    9
2     2  to the right of   10
3     2  to the right of    5
4     4  to the right of   10
5     4   to the left of    9
6     4   to the left of    7
7     5   to the left of    2
8     5   to the left of    9
9     5  to the right of   10
10    7  to the right of   10
11    7  to the right of    4
12    9  to the right of    4
13    9  to the right of   10
14    9   to the left of    1
15    9  to the right of    5
16    9  to the right of   11
17   10   to the left of    2
18   10   to the left of    7
19   10   to the left of    9
20   10   to the left of    4
21   10   to the left of   11
22   10   to the left of    5
23   11  to the right of   10
24   11   to the left of    9