Assertion: boiler's number | /r/HasProperty | traceable
Facets:
value: to workmanship
type: CAUSE
value: directly
type: MANNER
value: to poor design
type: CAUSE
Source sentences:
text: Before materials science, inspection standards, and quality control caught up with the rapidly growing boiler manufacturing industry, a significant number of boiler explosions were directly traceable to poor design, workmanship, and undetected flaws in poor quality materials.