Assertion: felt | /r/HasProperty | self-extinguishing
Facets:
Source sentences:
text: Felt is able to absorb the sound of footstep up to 21 decibels; attenuate the sound in air by 50 percent; is flame retardant and self-extinguishing; absorbs excess moisture; has superior thermal and acoustic insulating properties; neutralises toxic substances such as formaldehyde and ozone; is extraordinarily resilient; is an organic and completely biodegradable material.