Assertion: baby | /r/CapableOf | begin knee
Facets:
value: between 6 and 11 months
type: TEMPORAL
value: sometime
type: TEMPORAL
value: usually
type: DEGREE
Source sentences:
text: According to an international study by the World Health Organization, babies usually begin hands-and-knees crawling sometime between 6 and 11 months, and approximately half of all babies begin crawling by 8.3 months (WHO 2006).
text: Some babies begin hands-and-knees crawling without any prior experience with belly-crawling.