What appliance is to the left of the refrigerator?
The appliance is a microwave.
    src        edge_attr  dst
0     0   to the left of    3
1     0  to the right of    4
2     0  to the right of    5
3     1   to the left of    3
4     1  to the right of    4
5     3  to the right of    4
6     3  to the right of    1
7     3  to the right of    8
8     3  to the right of    5
9     3  to the right of    0
10    4   to the left of    1
11    4   to the left of    0
12    4   to the left of    3
13    4           behind    5
14    5  to the right of    6
15    5      in front of    4
16    5   to the left of    3
17    5   to the left of    0
18    6   to the left of    5
19    6               on    7
20    8   to the left of    3