claim: Dark matter is distinct from tau neutrinos.
evidence: Voltaic Labour Party -LRB- in French  : Parti Travailliste Voltaique -RRB- , was a centre-left political party in Upper Volta .. French. French language. centre-left. centre-left. political party. political party. Upper Volta. Republic of Upper Volta. PTV contested the 1970 elections , without any significant result .. PTV functioned as the political branch of the Voltaic Organization of Free Trade Unions -LRB- OVSL -RRB- .. Voltaic Organization of Free Trade Unions. Voltaic Organization of Free Trade Unions. Source  : Englebert , Pierre .. La Revolution Burkinabe .. Paris  : L'Harmattan , 1986 .. Category  : Defunct political parties in Burkina Faso