user: ### NOW ANSWER:
Question: Does Zigbee need neutral wire when the open source is yes?
Columns: ['Protocol', 'Power Line', 'Radio-Frequency', 'Open Source?', 'Needs Neutral Wire?']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['C-Bus', 'no', 'yes', 'yes', 'no (uses category-5 UTP)']
SQL:

assistant: SELECT "Needs Neutral Wire?" FROM "Table" WHERE "Open Source?" = 'yes' AND "Protocol" = 'Zigbee';