Assertion: emerald | /r/HasProperty | mined
Facets:
value: from ancient times
type: TEMPORAL
value: rarely
type: DEGREE
value: from alluvial deposits
type: LOCATION
Source sentences:
text: Emeralds are rarely mined from alluvial deposits.
text: From ancient times up to the 16th century, all emeralds were mined from deposits in Egypt, Austria or Russia - all locations in the old world.