Assertion: sacrum | /r/AtLocation | the bottom of the spine
Facets:
Source sentences:
text: It is at the bottom of the spine and the upper and back part of the pelvis.
text: It is at the bottom of the spine and the upper and back part of the pelvis.
text: The sacrum is at the bottom of the spine and lies between the fifth lumbar segment and the coccyx (tailbone).