BRITISH Prime Minister Rishi Sunak joked that the leader of the opposition Labour Party could not define what a woman was, during a parliamentary exchange that the mother of a murdered transgender girl had been invited to watch. Last week, two teenagers were jailed, for the murder of Brianna Ghey, who was stabbed 28 times with a hunting knife, and a Labour lawmaker had invited Ghey's mother to watch Sunak's weekly question-and-answer session in parliament. In an exchange with Labour leader Keir Starmer, who had said Ghey's mother was watching, Sunak said "defining a woman" was on a list of Starmer's broken promises, joking…