chain the results of parse_file to give a flat list
chain the results of parse_file to give a flat list

funginstitute/patentprocessor,yngcan/patentprocessor,yngcan/patentprocessor,yngcan/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor,nikken1/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor