Assertion: balsa | /r/HasProperty | replaced
Facets:
value: between two layers of fiberglass
type: LOCATION
Source sentences:
text: The balsa must then be replaced before the removed fiberglass layer is restored.
text: Used as a core material, balsa wood is placed between two layers of fiberglass to add strength and rigidity to structures that require it, usually the deck, many times the hull, and sometimes the other areas that require strength.