user: Question: What's the open source of X10 that no neutral wire needed?
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 "Open Source?" FROM "Table" WHERE "Needs Neutral Wire?" = 'no' AND "Protocol" = 'X10';