Assertion: stethoscope's bell | /r/HasProperty | the part of the stethoscope
Facets:
Source sentences:
text: The bell is the part of the stethoscope that’s used to detect low-frequency sounds.
text: The difference between the bell and the diaphragm is that the bell is the part of the stethoscope used to detect low-frequency sounds, while the diaphragm is used to detect high-frequency sounds.