question: Why are seabirds from the southern hemisphere more likely to migrate ?
answer: there is a large area of ocean in the Southern Hemisphere
turker_answer: Seabirds from the southern hemisphere are more likely to migrate because there is a large area of ocean in the Southern Hemisphere .
rule-based: Seabirds from the southern hemisphere more likely to migrate are because there is a large area of ocean in the Southern Hemisphere .