Assertion: salamander's gill | /r/CapableOf | remain until a length of about 20 cm
Facets:
value: at an age of 3 years
type: TEMPORAL
Source sentences:
text: When hatching, the larvae are about 3 cm (1.2 in) long and external gills remain until a length of about 20 cm (8 in) at an age of 3 years.