Assertion: broach spire | /r/HasProperty | developed in the attempt
Facets:
Source sentences:
text: In the attempt to coordinate harmoniously an octagonal spire with a square base, the broach spire was developed: sloping, triangular sections of masonry, or broaches, were added to the bottom of the four spire faces that did not coincide with the tower sides, as in the 12th-century Church of St. Columba at Cologne.