Assertion: contraction | /r/CapableOf | become painful
Facets:
Source sentences:
text: If the contractions become rhythmic, painful, or increasingly frequent, accompanied by menstrual-like cramping or abdominal pain, then she should contact her medical provider or midwife immediately.
text: Fast twitch fibers contract quickly and powerfully but fatigue very rapidly, sustaining only short, anaerobic bursts of activity before muscle contraction becomes painful.