['The', 'lock', 'stitch', 'sewing', 'machine', 'revolutionized', 'garment', 'manufacturing', 'in', 'the', '19th', 'century', '.', 'It', 'uses', 'a', 'single', 'needle', 'and', 'two', 'threads', 'to', 'create', 'a', 'secure', 'stitch', ',', 'making', 'it', 'ideal', 'for', 'a', 'variety', 'of', 'fabrics', '.', 'This', 'machine', 'significantly', 'increased', 'the', 'speed', 'of', 'production', 'and', 'improved', 'the', 'quality', 'of', 'stitches', 'compared', 'to', 'earlier', 'methods', '.', 'Alongside', 'the', 'lock', 'stitch', 'sewing', 'machine', ',', 'the', 'chain', 'stitch', 'sewing', 'machine', 'also', 'gained', 'popularity', 'for', 'its', 'ability', 'to', 'sew', 'stretchy', 'fabrics', ',', 'making', 'it', 'essential', 'for', 'the', 'production', 'of', 'sportswear', '.']
[[1, 4, 'Textile Machinery'], [63, 66, 'Textile Machinery']]