I am verifying the answers generated by an automatic system to the following question: what is kathmandu known for
Suggested answer: Kathmandu's sister cities ( Lalitpur Patan ) and Bhaktapur are integral to Kathmandu's cultural heritage, tourism industry, and economy; therefore UNESCO's World Heritage Site lists all three cities' monuments and attractions together under one heading, "Kathmandu Valley- UNESCO World Heritage Site ".
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