Assertion: boston cream pie | /r/CapableOf | chocolate icing onto sponge cake
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Source sentences:
text: When the Omni Parker House opened in 1855, New Englanders had already been eating a dessert called "pudding-cake pie," but when Parker House's Chef Sanzian drizzled chocolate icing onto sponge cake filled with vanilla custard, the Boston Cream Pie was born.