Assertion: olive's oil | /r/HasProperty | extracted with boiling water
Facets:
Source sentences:
text: As an example, in a 4,000-year-old kitchen unearthed in Indiana's Charlestown State Park, archaeologist Bob McCullough of Indiana University-Purdue University Fort Wayne found evidence that large slabs of rock were used to crush hickory nuts and the oil was then extracted with boiling water.