Assertion: frigate | /r/HasProperty | built with steam engines
Facets:
value: from the mid-1840s
type: TEMPORAL
Source sentences:
text: From the mid-1840s on, frigates which more closely resembled the traditional sailing frigate were built with steam engines and screw propellers.
text: From the mid-1840s on, frigates which more closely resembled the traditional sailing frigate were built with steam engines and screw propellers.