Use DoverToCalais to find all Persons or Organizations with a relevance score greater than 0.1, if the data source contains an environmental event.

gistfile1.rb

require 'dover_to_calais'

EM.run do

  # use Control + C to stop the EM
  Signal.trap('INT')  { EventMachine.stop }
  Signal.trap('TERM') { EventMachine.stop }

  DoverToCalais::API_KEY =  'my_opencalais_key'


  source = 'http://www.eurocities.eu/eurocities/news/World-Mayors-Summit-on-Climate-Change-2013-WSPO-9BXLMT'
  dover = DoverToCalais::Dover.new(source)


  dover.to_calais do |response|
    if   response.error
      puts  response.error
    else
     organisations = response.filter({:entity => 'Organization', :given => {:entity => 'Event',  :value => 'Environment'}})
     persons = response.filter({:entity => 'Person', :given => {:entity => 'Event',  :value => 'Environment'}})
     results = organisations | persons
     results.each do |item|
      puts item.value if item.relevance > 0.1 
     end
     
    end #if
  end #block

  dover.analyse_this


end #EM run