Cumulonimbus Cloud
Table:
Cumulonimbus Cloud
Abbreviation	Cb
Genus	Cumulonimbus (heaped, rain)
Species

Calvus
Capillatus

Variety	None
Altitude	500-16,000 m
(2,000-52,000 ft)
Classification	Family C (Low-level)
Appearance	Very tall and large clouds
Precipitation cloud?	Very common, heavy at times

Consulting the table, determine whether the statement is entailed, neutral, or refuted. Output only the JSON object {"answer": "YOUR ANSWER"}.

Sentence: A Cumulonimbus Cloud usually is below 50,000 feet.

answer: entailed