DICT_DIM=3000
@provider(input_types=[integer_sequence(DICT_DIM), integer_value(DICT_DIM)])
def process(settings, filename):
	with open(filename) as f:
		# yield word ids to predict inner word id
		# such as [28, 29, 10, 4], 4
		# It means the sentance is  28, 29, 4, 10, 4.
		yield read_next_from_file(f)