# Encode a sample input sentence
sample_sentence = 'I liked this movie'
token_ids = tokenizer.encode(sample_sentence, return_tensors='np')[0]
print(f'Token IDs: {token_ids}')

# Convert the token IDs back to tokens to reveal the special tokens added
tokens = tokenizer.convert_ids_to_tokens(token_ids)
print(f'Tokens   : {tokens}')