Assertion: cannonball's foot | /r/HasProperty | 1,200 m
Facets:
Source sentences:
text: The cargo was detonated at a depth of 4,000 feet (1,200 m).
text: On 28 July 1966, Horace Greeley was loaded with obsolete munitions and detonated at a depth of 4,000 feet (1,200 m).