question: What did Darwin learn about about the characteristics of domestic animals ?
answer: use in our domestic animals strengthens and enlarges certain parts , and disuse diminishes them
turker_answer: Darwin learned use in our domestic animals strengthens and enlarges certain parts , and disuse diminishes the characteristics of domestic animals .
rule-based: Darwin learnt about use in our domestic animals strengthens and enlarges certain parts , and disuse diminishes them about the characteristics of domestic animals .