[relationship] (2 [relationship links])
Katherine Burk [is]
[a sister-in-law] of David Petrick].
-
[indeed,]
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Edward Burk
(1 [relationship link])
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Lillian Korpinen
(1 [relationship link])
[are] [at the same time]
-
[[[the parents] of [the spouse]] of David Petrick]
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[[the parents] of Katherine Burk]