Assertion: antenna's cable | /r/ObjectUse | used for testing
Facets:
value: in pittsburgh
type: LOCATION
value: previously
type: TEMPORAL
value: on september 1899
type: TEMPORAL
Source sentences:
text: The very first demonstration of loading coils on a telephone cable was on a 46-mile length of the so-called Pittsburgh cable (the test was actually in Boston, the cable had previously been used for testing in Pittsburgh) on 6 September 1899