question: Why could n't Asa Gray use a Boston publisher for an American version of On the Origin of Species ?
answer: two New York publishing firms were already planning to exploit the absence of international copyright to print Origin
turker_answer: Asa Gray could n't use a Boston publisher for an American version of On the Origin of Species because two New York publishing firms were already planning to exploit the absence of international copyright to print it .
rule-based: N't Asa Gray could use a Boston publisher for an American version of On the Origin of Species because two New York publishing firms were already planning to exploit the absence of international copyright to print Origin .