sentence: In recent decades , however , developments have been particularly groundbreaking . Man has been able to invent machines which have been put to work . Automation is a great help to mankind , because it significantly increases the standard of living and frees people from hard work .
modified: In recent decades , however , developments have been particularly groundbreaking , Man has been able to invent machines , which they have been put to work automation is a great help to mankind , because it significantly increases the standard of living and frees people form hard work .
transformation: PUNCT, PUNCT, PRON, PUNCT, OTHER