Analysis Summary:

The BBC article is highly accurate, with its key claims supported by multiple reliable sources. The article presents the information in a neutral and balanced manner, with no apparent bias. The primary claim regarding the family's lack of awareness of the ketamine struggle is consistently supported.

Detailed Analysis:

• Claim:** James Lee Williams' sister says the family only learned of the drag performer's drug problem after watching Drag Race UK.
  • Verification Source #3: Supports this claim, stating "The Vivienne's 'devastated' sister reveals family had no idea struggling drag race star was no longer sober..."
  • Verification Source #2: Supports the general idea that friends and family were unaware, stating "Prior to his admission to rehab, many friends had no idea he was struggling."
  • Verification Source #1, #4, and #5: Do not directly address the family's awareness but confirm the cause of death and the struggle with ketamine.

Supporting Evidence/Contradictions:

• Verification Source #3: "The Vivienne, whose real name was James Lee Williams, died January 5 from a cardiac arrest after taking ketamine, following years of sobriety and being open…" This supports the claim that the family was unaware of the relapse.
• Verification Source #5: "RuPaul's Drag Race star The Vivienne died from a cardiac arrest after taking ketamine, the performer's family has revealed." This confirms the cause of death.
• Verification Source #1: "RuPaul's Drag Race star The Vivienne died from ketamine-induced cardiac arrest, family confirms..." This also confirms the cause of death.
• There are no contradictions among the sources.