oracle02.sol

// defines a general api request
struct Request {
  uint id;                          //request id
  string urlToQuery;                //API url
  string attributeToFetch;          //json attribute (key) to retrieve in the response
  string agreedValue;               //value from key
  mapping(uint => string) anwers;   //answers provided by the oracles
  mapping(address => uint) quorum;  //oracles which will query the answer (1=oracle hasn't voted, 2=oracle has voted)
}