question: How much did the price of oil increase from early 2007 to 2008 ?
answer: nearly tripled from $ 50 to $ 147
turker_answer: The price of oil increased by nearly triple from $ 50 to $ 147 from early 2007 to 2008
rule-based: The price of oil increase from early 2007 to 2008 did nearly tripled from $ 50 to $ 147 .