{
  "centroid":66.67779325825306,
  "trace": [
    "if days_to_flight is many_days [0.00] then price_increase is low [0.00].",
    "if days_to_flight is few_days [0.36] then price_increase is moderate [0.36].",
    "if days_to_flight is last_minute [0.50] then price_increase is high [0.50].",
    "⌖low×[0.00]+moderate×[0.36]+high×[0.50].",
    "⌖down(0,0,25)×[0.00]+tri(20,50,75)×[0.36]+up(70,100,100)×[0.50].",
    "⌖66.68."
  ],
  "what":"rules_result"
}