sparql.rb

require 'rubygems'
require 'kasabi'

#Demonstration api key
APIKEY = "YOUR_API_KEY"

dataset = Kasabi::Dataset.new("http://kasabi.com/dataset/nasa", :apikey => APIKEY )

#SPARQL query to find name of spacecraft launched on 16th July 1969, as JSON"      
QUERY = <<-EOL
PREFIX space: <http://purl.org/net/schemas/space/>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX foaf: <http://xmlns.com/foaf/0.1/>

SELECT ?name
WHERE {

  ?launch space:launched "1969-07-16"^^xsd:date.

  ?spacecraft space:launch ?launch;
              foaf:name ?name.      
}

EOL


response = dataset.sparql_endpoint_client.select(QUERY)
json = JSON.parse( response.content )

#Results are in SPARQL JSON Results Format
json["results"]["bindings"].each do |binding| 
  puts binding["name"]["value"]  
end   

#OUTPUT
#
# Apollo 11 Command and Service Module (CSM)
# Apollo 11 SIVB
# Apollo 11 Lunar Module / EASEP