['In', 'the', '19th', 'century', ',', 'the', 'mule', 'was', 'a', 'revolutionary', 'textile', 'machinery', 'that', 'combined', 'the', 'processes', 'of', 'drawing', 'and', 'spinning', 'wool', 'into', 'a', 'single', 'operation', '.', 'Originally', 'developed', 'for', 'wool', ',', 'the', 'mule', 'was', 'later', 'adapted', 'for', 'cotton', 'and', 'worsted', 'yarns', ',', 'showcasing', 'its', 'versatility', '.', 'The', 'machine', "'s", 'design', 'allowed', 'for', 'the', 'production', 'of', 'fine', 'and', 'strong', 'yarn', ',', 'making', 'it', 'indispensable', 'in', 'textile', 'manufacturing', 'during', 'the', 'industrial', 'revolution', '.']
[[6, 6, 'Textile Machinery']]