Assertion: muscular dystrophy's muscle | /r/NotCapableOf | hold the spine
Facets:
Source sentences:
text: A curvature in the spine can occur when weakened muscles are unable to hold the spine straight.
text: can occur when weakened muscles are unable to hold the spine straight.
text: Weakened muscles might be unable to hold the spine straight.
text: Weakened muscles might be unable to hold the spine straight.