Assertion: olive oil | /r/MadeOf | substance
Facets:
value: according to research
type: OTHER
Source sentences:
text: Olive oil contains a substance known as phytochemicals, and studies have shown that these can be effective both in killing cancerous cells and suppressing the genes that are responsible for the onset of cancer.
text: According to research published in 2019, olive oil contains substances that may help prevent colorectal cancer.