{
  "centroid":8.00158447217271,
  "trace": [
    "if days_to_flight is many_days [0.71] then price_increase is low [0.71].",
    "if days_to_flight is few_days [0.00] then price_increase is moderate [0.00].",
    "if days_to_flight is last_minute [0.00] then price_increase is high [0.00].",
    "⌖low×[0.71]+moderate×[0.00]+high×[0.00].",
    "⌖down(0,0,25)×[0.71]+tri(20,50,75)×[0.00]+up(70,100,100)×[0.00].",
    "⌖8.00."
  ],
  "what":"rules_result"
}