{"results": {"bindings": [{"name": {"type": "literal", "value": "Ada"}, "contact": {"type": "literal", "value": "ada@example.org"}}, {"name": {"type": "literal", "value": "Ben"}, "contact": {"type": "literal", "value": "missing"}}, {"name": {"type": "literal", "value": "Cora"}, "contact": {"type": "literal", "value": "cora@example.net"}}, {"name": {"type": "literal", "value": "Dani"}, "contact": {"type": "literal", "value": "missing"}}]}, "head": {"vars": ["name", "contact"]}}