diff --git a/scrapontology/extractor.py b/scrapontology/extractor.py
index 3a545a0..02e9305 100644
--- a/scrapontology/extractor.py
+++ b/scrapontology/extractor.py
@@ -1,17 +1,15 @@
 import logging
 from abc import ABC, abstractmethod
-from typing import List, Tuple, Dict, Any, Optional
+from typing import List, Dict, Any, Optional
 from .primitives import Entity, Relation
 from .parsers.base_parser import BaseParser
-from .parsers.prompts import DELETE_PROMPT, UPDATE_ENTITIES_PROMPT, UPDATE_SCHEMA_PROMPT, CREATE_TABLES_PROMPT
-from .llm_client import LLMClient
+from .parsers.prompts import DELETE_PROMPT, UPDATE_SCHEMA_PROMPT, CREATE_TABLES_PROMPT
 from .parsers.prompts import UPDATE_SCHEMA_PROMPT
 from .db_client import DBClient, PostgresDBClient
 import json
 from langgraph.graph import StateGraph, END, START
-from typing import TypedDict, Literal
+from typing import Literal
 from scrapontology.db_client import PostgresDBClient
-from scrapontology.llm_client import LLMClient
 from pydantic import BaseModel
 logger = logging.getLogger(__name__)
 logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
diff --git a/scrapontology/llm_client.py b/scrapontology/llm_client.py
index 1e45f58..c104bd8 100644
--- a/scrapontology/llm_client.py
+++ b/scrapontology/llm_client.py
@@ -1,8 +1,6 @@
 import requests
 import logging
-from typing import Dict, Any, Optional, List
-from typing import Any, Callable
-from pydantic_core import CoreSchema, core_schema
+from typing import Dict, Optional
 
 logger = logging.getLogger(__name__)
 
diff --git a/scrapontology/parsers/pdf_parser.py b/scrapontology/parsers/pdf_parser.py
index f8cf9ae..ba1e0ef 100644
--- a/scrapontology/parsers/pdf_parser.py
+++ b/scrapontology/parsers/pdf_parser.py
@@ -16,7 +16,6 @@
 from langgraph.graph import StateGraph, START, END
 from pydantic import BaseModel
 from typing import Optional, List
-from collections import defaultdict
 
 
 # Set up logging