question: How are the two ratios found ?
answer: subjectively determined based on a resolution of 70 pixels per cm ( 178 DPI ) when viewed at 25 cm ( 9.8 inch ) distance
turker_answer: The two ratios are found by determining the resolution of 70 pixels per cm ( 178 DPI ) when viewed at 25 cm ( 9.8 inch ) distance .
rule-based: The two ratios are found by subjectively determined based on a resolution of 70 pixels per cm ( 178 DPI ) when viewed at 25 cm ( 9.8 inch ) distance .