question: Which PC owners could purchase a Windows 8 Pro uprgrade for $ 14.99 ?
answer: PCs pre-loaded with Windows 7 Home Basic , Home Premium , Professional , or Ultimate
turker_answer: Owners of PC 's pre-loaded with Windows 7 Home Basic , Home Premium , Professional , or Ultimate could purchase a Windows 8 Pro uprgrade for $ 14.99 .
rule-based: PCs pre-loaded with Windows 7 Home Basic , Home Premium , Professional , or Ultimate could purchase a Windows 8 Pro uprgrade for $ 14.99 .