question: What changed about the way geology was implemented during the 19th century ?
answer: shifted from description and classification to attempts to understand how the surface of the Earth had changed
turker_answer: The way geology was implemented during the 19th century shifted from description and classification to attempts to understand how the surface of the Earth had changed .
rule-based: Shifted from description and classification to attempts to understand how the surface of the Earth had changed changed about the way geology was implemented during the 19th century .