Film 'Laapataa Ladies' writer Biplab Goswami said he doesn't know anything about the 2019 Arabic short film 'Burqa City' amid allegations of plagiarism in Kiran Rao's directorial. "Burqa City makers should have approached us…if they had any doubt," Biplab said. "A group of artists' hard work and goodwill has been affected…people should not spread rumours about anyone," he added.