import json

input_file = 'TriviaQA_train.jsonl'
output_file = 'TriviaQA_train25k.jsonl'

with open(input_file, 'r', encoding='utf-8') as f_input:
    with open(output_file, 'w', encoding='utf-8') as f_output:
        for idx, line in enumerate(f_input):
            if idx >= 25000:
                break
            data = json.loads(line)
            json.dump(data, f_output)
            f_output.write('\n')