from agno.agent import AgentKnowledgefrom agno.vectordb.pgvector import PgVectorfrom agno.embedder.sentence_transformer import SentenceTransformerEmbedder# Embed sentence in databaseembeddings = SentenceTransformerEmbedder().get_embedding("The quick brown fox jumps over the lazy dog.")# Print the embeddings and their dimensionsprint(f"Embeddings: {embeddings[:5]}")print(f"Dimensions: {len(embeddings)}")# Use an embedder in a knowledge baseknowledge_base = AgentKnowledge( vector_db=PgVector( db_url="postgresql+psycopg://ai:ai@localhost:5532/ai", table_name="sentence_transformer_embeddings", embedder=SentenceTransformerEmbedder(), ), num_documents=2,)