anchor.diff:  Sgt Peffer's Cafe Italian,"1501 N Saddle Creek Rd, Omaha, NE",41.273084,-95.987816
   Mama's Pizza,"715 N Saddle Creek Rd, Omaha, NE",41.265883,-95.980682
   Zio's New York Style Pizzeria,"1213 Howard St, Omaha, NE",41.25545,-95.932022
  -Boston's Restaurant & Sports,"620 E Disk Dr, Rapid City, SD",44.106938,-103.205226
   Zio's New York Style Pizzeria,"7834 W Dodge Rd, Omaha, NE",41.26325,-96.0564
   La Casa Pizzaria,"4432 Leavenworth St, Omaha, NE",41.2524,-95.979578
  -Giordano's,"730 N Rush St, Chicago, IL",41.895729,-87.625411
   Lou Malnati's Pizzeria,"439 N Wells St, Chicago, IL",41.890346,-87.633927
   Piece Restaurant,"1927 W North Ave, Chicago, IL",41.910493,-87.676127
   Connie's Pizza Inc,"2373 S Archer Ave, Chicago, IL",41.849213,-87.641681
  
positive.code: California Pizza Kitchen,"330 S Hope St, Los Angeles, CA",34.05333,-118.252683
  B J's Pizza & Grill,"200 Main St # 101, Huntington Beach, CA",33.658058,-118.001101
  B J's Restaurant & Brewhouse,"280 S Coast Hwy, Laguna Beach, CA",33.54209,-117.783516
  Giuseppe's Depot Restaurant,"10 S Sierra Madre St, Colorado Springs, CO",38.834548,-104.828297
  Beau Jo's Pizza,"2710 S Colorado Blvd, Denver, CO",39.667342,-104.940708
  Pasquini's Pizzeria,"1310 S Broadway, Denver, CO",39.692824,-104.987463
  Fargos Pizza Co,"2910 E Platte Ave, Colorado Springs, CO",38.839847,-104.774423
  
negative.code: California Pizza Kitchen,"1493 Saint Louis Galleria, St Louis, MO",38.633613,-90.345949
  D'Bronx,"2450 Grand Blvd # 124, Kansas City, MO",39.082723,-94.58178
  Giuseppe's Depot Restaurant,"10 S Sierra Madre St, Colorado Springs, CO",38.834548,-104.828297
  Old Chicago,"1415 Market St, Denver, CO",39.748177,-105.000501
  Brick Oven Restaurant,"111 E 800 N, Provo, UT",40.244493,-111.656322
  Zachary's Chicago Pizza,"5801 College Ave, Oakland, CA",37.846179,-122.251951
  Zachary's Chicago Pizza,"1853 Solano Ave, Berkeley, CA",37.891407,-122.27843
  