Assertion: shoulder's ligament | /r/CapableOf | keep the ball
Facets:
value: in the socket
type: LOCATION
Source sentences:
text: While strong ligaments keep the "ball" centered in the socket, your rotator cuff muscles (which also cover the upper arm bone) allow you to lift and rotate your arm.﻿﻿ Issues with any part of this architecture can cause you to experience pain in the shoulder.
text: The ligaments are the tethers that go from bone to bone and hold them together to help keep the ball in the socket.