Assertion: railroad's line | /r/HasProperty | joined at promontory summit
Facets:
value: together
type: MANNER
value: on may
type: TEMPORAL
Source sentences:
text: The two lines were joined together at Promontory Summit, Utah, 53 miles (85 km) west of Ogden on May 10, 1869, hence creating the first transcontinental railroad in North America.