Headline: Amazon to purchase One Medical for $3.9B 
Candidate headlines:
- Amazon strikes $3.5 bln deal for One Medical in long march into U.S. healthcare  — same event: no
- STAT Deal between Amazon and One Medical has massive implications for the future of primary care — same event: no
- STAT 5 burning questions about Amazon's $3.9 billion acquisition of One Medical  — same event: no