Question: Kolkata Rainbow Pride Festival (KRPF), formed on which date, is a Kolkata based open collective of individuals, networks and organizations that support LGBT rights?
Sentence (from "Kolkata Rainbow Pride Festival"): It was formed on 1 May 2011 to take the initiative of organising Kolkata Rainbow Pride Walk and runs a number of events such as art exhibits, film screenings, panel discussions, cultural events, community hang outs etc.
Relevant evidence: Yes