{
  "centroid":71.58960583368597,
  "trace": [
    "if days_to_flight is many_days [0.00] then price_increase is low [0.00].",
    "if days_to_flight is few_days [0.27] then price_increase is moderate [0.27].",
    "if days_to_flight is last_minute [0.60] then price_increase is high [0.60].",
    "⌖low×[0.00]+moderate×[0.27]+high×[0.60].",
    "⌖down(0,0,25)×[0.00]+tri(20,50,75)×[0.27]+up(70,100,100)×[0.60].",
    "⌖71.59."
  ],
  "what":"rules_result"
}