Here are 2 categories triple stumpers from the 5-31-2019 Jeopardy! match.

The players got all the clues in POTPOURRI:

($400) This country, an enclave in Italy, is smaller than the National Mall in Washington, D.C.
($800) It was first offered as a fountain beverage at Jacobs’ Pharmacy in Atlanta in 1886
($1200) This animal, a proverbial symbol of grace, also has pure speed; it can run about 50 mph
($1600) The name of this 2-hulled boat is from the Tamil for “tied wood”
($2000) On Nov. 12, 1833 these meteor showers were seen across all of North America, sparking a serious study of meteor showers

ANSWERS: show

The players also got all those clues in ALTER EGOS:

($400) On the Disney channel, teenager Miley Stewart had a secret identity: this pop star
($800) This chemistry teacher: Heisenberg, a meth kingpin
($1200) Emperor Palpatine: this Sith Lord
($1600) The Half-Blood Prince: this potions professor
($2000) This singer: the androgynous Ziggy Stardust

ANSWERS: show

Today’s Daily Doubles and more information on Final Jeopardy! on Fikkle Fame’s full Daily Jeopardy! Recap