question: What could the sun 's energy do to help limit climate change ?
answer: could play a key role in de-carbonizing the global economy alongside improvements in energy efficiency and imposing costs on greenhouse gas emitters
turker_answer: The sun 's energy could play a key role in de-carbonizing the global economy alongside improvements in energy efficiency and imposing costs on greenhouse gas emitters to help limit climate change .
rule-based: The sun 's energy could could play a key role in de-carbonizing the global economy alongside improvements in energy efficiency and imposing costs on greenhouse gas emitters to help limit climate change .