Assertion: escalator | /r/HasProperty | installed in underground subway system
Facets:
Source sentences:
text: Jesse Reno also designed the first escalators installed in any underground subway system in the form of a helical escalator at Holloway Road tube station in London in 1906.
text: Jesse Reno also designed the first escalators installed in any underground subway system in the form of a helical escalator at Holloway Road tube station in London in 1906.