anchor.diff:  RETURN a.name, b.name, toInt(distance(point(a),point(b)) / 1000) as distance;
   ----
   
  -The query will provide the distance in kilometers between two locations which are in the same country:
  +This query will provide the distance in kilometers between two locations which are in the same country:
   
   ----
   MATCH (a:Location {name: "Baltimore"}),(b:Location),(a)-[:WITHIN]->(c:Country)
  
positive.code: 
  
  ////
  .Configuration
  . Optional, remove comments from squid.conf, `grep -Eiv '(^#|^$)' /etc/squid/squid.conf > /etc/squid/squid.conf.new`
  . Set `http_port` from `3128` to `80 accel allow-direct`. This will allow Squid to proxy all HTTP traffic.
  
negative.code: RETURN *
  ----
  
  --4. Validate you can perform a query that calculates the distance between two location nodes. 
  
  ----
  