--- a
+++ b/aiagents4pharma/talk2knowledgegraphs/.env.example
@@ -0,0 +1,5 @@
+# .env.example (DO NOT put actual API keys here, read the README.md)
+OPENAI_API_KEY=your_openai_api_key_here
+OLLAMA_HOST=http://ollama:11434
+LANGCHAIN_TRACING_V2=true
+LANGCHAIN_API_KEY=your_langchain_api_key_here