Assertion: gopher tortoise's burrow | /r/HasProperty | 15 feet long
Facets:
value: usually
type: TEMPORAL
value: typically
type: DEGREE
Source sentences:
text: On average, burrows are 15 feet long and seven feet deep, but depth is dependent on local soils and the location of water tables.
text: The burrows are typically 12 – 15 feet long and go into the ground at a 45 degree angle, so they get deep pretty fast.
text: These burrows are usually about 15 feet long and about 6.5 feet deep, although the largest known burrow is over 47 feet long!