Assertion: horse manure | /r/HasProperty | standard way
Facets:
value: in the 19th century
type: TEMPORAL
Source sentences:
text: In the 19th century horse manure was the standard way to grow tropical plants in "hot-beds" or "hot-houses" in temperate climates - just plant them into neat horse-manure that would easily heat up to 50 degrees C or more.