question: Who is the economist who said there was about $ 1.7 billion in lost opportunity costs because of the 2007 changes ?
answer: William F. Shughart II
turker_answer: William F. Shughart II is the economist who said there was about $ 1.7 billion in lost opportunity costs because of the 2007 changes .
rule-based: William F. Shughart II is the economist who said there was about $ 1.7 billion in lost opportunity costs because of the 2007 changes .