Do you see any benches or umbrellas?
Yes, there is an umbrella.
    src        edge_attr  dst
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1     1  to the right of    4
2     1  to the right of    3
3     1  to the right of    7
4     2  to the right of    5
5     2  to the right of    4
6     2  to the right of    3
7     3  to the right of    9
8     3   to the left of    2
9     3   to the left of    1
10    4   to the left of    2
11    4   to the left of    1
12    4  to the right of    9
13    5  to the right of    9
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15    7   to the left of    1
16    7  to the right of    9
17    9   to the left of    5
18    9   to the left of    4
19    9   to the left of    3
20    9   to the left of    7