Assertion: tower's structure | /r/CapableOf | pose challenge
Facets:
value: to its construction
type: TRANSITIVE-OBJECT
value: to construction
type: PURPOSE
Source sentences:
text: Adrian smith proposed the current design of the building in 2010 and its construction was expected to commence in 2012 but the geological structure of the surrounding area posed a challenge to its construction and construction commenced four years later.