B1
Table:
B1
System	Zhengzhou BRT
Operator	Zhengzhou Bus Communication Corporation
Vehicle	Yutong ZK6180CHEVNPG3 (18m)
Livery	Green
Status	Operational
Began service	2009
Predecessors	Zhengzhou Bus Route 96
Locale	Zhengzhou
Start	Zhongzhou Avenue and Nongye Road
End	Dianchang Road B/T
Length	26 km (16 mi)
Stops	32
Level	Daily
Frequency	Every 2-5 minutes
Operates	6:00 am – 9:30 pm

From the table, determine whether the statement is entailed, neutral, or refuted. Conclude with JSON {"answer": "YOUR ANSWER"} — nothing else.

Assertion: The B1 operates on a 24-hour schedule.

answer: refuted