Assertion: stethoscope's tube | /r/HasProperty | wooden
Facets:
Source sentences:
text: It consisted of a wooden tube and was monaural.
text: The first stethoscope was a wooden tube similar to the "ear horn" hearing aids of the time.
text: The first stethoscope consisted of a wooden tube and was monaural.
text: It comprised of the wooden tube.
text: This first stethoscope consisted of a wooden tube and was monaural.