Example using python to interact with Carnegie Hall's SPARQL endpoint

ch_sparql.py

import requests
import json

url = "http://data.carnegiehall.org/sparql/"

sparql = """
	#Find works by string in the title (case-insensitive)
	PREFIX dcterms: <http://purl.org/dc/terms/>
	PREFIX foaf: <http://xmlns.com/foaf/0.1/>
	PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
	select distinct ?instance ?composer ?title where {
	  ?instance a <http://schema.org/MusicComposition> ;
	              dcterms:creator ?creator ;
	              rdfs:label ?title .
	  ?creator foaf:name ?composer
	              filter regex(?title, "Piano Sonata", "i")
	}
	limit 50
"""


headers = {
	'Accept' : 'application/json',
	'User-Agent': 'Matt Miller - Test Script '
}

data = {
	'query': sparql
}


r = requests.post(url, headers=headers, data=data)

data = json.loads(r.text)

for result in data['results']['bindings']:
	if 'composer' in result and 'instance' in result and 'title' in result:
		print(result['composer']['value'], result['title']['value'], result['instance']['value'])