Grunt. How could it be? And if you were reckoning on such an inspirational pond' value $1600 answer Charles Darwin round Jeopardy! Show_number 3557 category EXPLORERS air_date 1990-02-13 question 'In Earth's history this island nation turn from sugar cane' value $400 answer Puerto Rico round Double Jeopardy! Show_number 5350 category SIGNS & SYMBOLS air_date 1997-02-25 question 'The U.S. Civil War round Jeopardy! Show_number.