Assertion: envelope | /r/HasProperty | bottom two thirds
Facets:
Source sentences:
text: The main part of the envelope (the bottom two thirds) is normally made from a combination of nylon or polyester, the same type of material that parachutes are made of.
text: The main part of the envelope (the bottom two thirds) is normally made from a combination of nylon or polyester, the same type of material that parachutes are made of.