Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE TRANSACTIONS (transaction_id VARCHAR)
TABLE: CREATE TABLE Transactions_Lots (lot_id VARCHAR, transaction_id VARCHAR)

### Question ###
Show the average amount of transactions for different lots.

### Accurate SQL ###

SELECT T2.lot_id, AVG(amount_of_transaction) FROM TRANSACTIONS AS T1 JOIN Transactions_Lots AS T2 ON T1.transaction_id = T2.transaction_id GROUP BY T2.lot_id