What is filled with luggage?
The carts are filled with luggage.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of    7
2     1      filled with    7
3     1   to the left of    3
4     1  to the right of    9
5     3          wearing    0
6     3  to the right of    6
7     3  to the right of    1
8     3  to the right of    7
9     3  to the right of    4
10    4   to the left of    3
11    4   to the left of    0
12    5  to the right of    8
13    6               on    1
14    6   to the left of    3
15    7   to the left of    3
16    7   to the left of    0
17    7  to the right of    9
18    8   to the left of    5
19    8               on    8
20    8   to the left of    9
21    9  to the right of    8
22    9   to the left of    1
23    9   to the left of    7