Assertion: appendicular skeleton's bone | /r/HasProperty | attached at the joint
Facets:
Source sentences:
text: Muscles contract (bunch up) to move the bone attached at the joint.
text: Muscles are needed to move bones attached by joints.
text: Muscular System Muscles contract (shorten) to move the bone attached at the joint.
text: Muscles contract to move the bone attached at the joint.