With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Biographer Clarice Stasz and others believe London's father was astrologer William Chaney. Flora Wellman was living with Chaney in San Francisco when she became pregnant. It is not known if Wellman and Chaney were married in the legal sense. Stasz notes that in his memoirs, Chaney refers to London's mother Flora Wellman as having been "his wife"; he also cites an advertisement in which Flora called herself "Florence Wellman Chaney".
text_B: Knowing that the state of California does not recognize common-law marriage, does the passage allow for the possibility that Wellman and Chaney lived their lives without being officially recognized as a married couple by the state, even if their friends and the public viewed them as such?
YES.