Assertion: disc's groove | /r/CapableOf | touch along short line
Facets:
Source sentences:
text: 1) the side was made into one ellipse as seen from behind, meaning the groove touched along a short line and 2) the ellipse form was also polished as seen from above and curvature in the direction of the groove became much smaller than 25 micrometers e.g. 13 micrometers.