tease out

verb

1. To unravel; (figuratively, by extension) to determine; solve.

   “2017, Jennifer S. Holland, For These Monkeys, It’s a Fight for Survival., National Geographic (March 2017)http://www.nationalgeographic.com/magazine/2017/03/macaques-monkeys-indonesia-endangered-pet-trade/ The researchers are teasing out fine details of the yaki’s private life.”

   “CLA is actually an umbrella term for several different types of trans fats similar in chemical structure. More research is necessary to tease out which type of CLA is actually the most beneficial (but more on that later).”

2. To separate as if by unraveling.
3. To work out, procure, or extract, usually by processes involving subterfuge, diligence, manipulation, or coaxing.

   “Well, early in the days of vitamin and mineral discovery, chickens were the research models for studies that eventually teased out information that we take for granted today.”