Assertion: fortress's construction | /r/HasProperty | underway
Facets:
Source sentences:
text: In 1673, Ulrik Frederik Gyldenløve wrote that construction was underway on a defensive structure on top of a hill.
text: In 1673, Ulrik Frederik Gyldenløve wrote that construction was underway on a defensive structure on top of a hill.
text: In 1673, Ulrik Frederik Gyldenløve wrote that construction was underway on a defensive structure on top of a hill.