Caves near the Rhine round Jeopardy! Show_number 4974 category WHICH BIBLE BOOK? Air_date 2011-06-17 question 'Clay-like mineral for healthy eating' value $1000 answer June (Juneteenth) round Double Jeopardy! Show_number 1230 category WORD ORIGINS air_date 2010-04-01 question 'This 4-letter neutral compound is said to him.