129th National Puzzlers' League convention
129th National Puzzlers' League convention
is …
instance of (P31)
:
recurrent event edition
Q27968055
P393
edition number
129
P276
location
Martha's Vineyard
Q49148
P179
part of the series
National Puzzlers' League convention
Q107721263
P585
point in time
1952-09-01
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