Templates (#12294)

Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
Co-authored-by: Lance Martin <lance@langchain.dev>
Co-authored-by: Jacob Lee <jacoblee93@gmail.com>

templates/neo4j-cypher-ft/ingest.py

@@ -0,0 +1,21 @@
+from langchain.graphs import Neo4jGraph
+
+graph = Neo4jGraph()
+
+# Import sample data 
+graph.query(
+    """
+MERGE (m:Movie {name:"Top Gun"})
+WITH m
+UNWIND ["Tom Cruise", "Val Kilmer", "Anthony Edwards", "Meg Ryan"] AS actor
+MERGE (a:Person {name:actor})
+MERGE (a)-[:ACTED_IN]->(m)
+"""
+)
+
+# Create full text index for entity matching
+# on Person and Movie nodes
+graph.query(
+    "CREATE FULLTEXT INDEX entity IF NOT EXISTS"
+    " FOR (m:Movie|Person) ON EACH [m.title, m.name]"
+)