Johnnie Walker
Table:
Johnnie Walker

Type	Scotch whisky
Manufacturer	Diageo
Country of origin	Scotland
Introduced	1820: Grocery store
1865: Whisky blending
Related products	Ballantine's, Buchanan's, Chivas Regal, Cutty Sark, Dewar's, Vat 69
Website	johnniewalker.com

Looking at the table, identify if the claim is entailed, neutral, or refuted. Return the result as JSON: {"answer": "YOUR ANSWER"}.

Assertion: Johnnie Walker was first introduced in the last quarter of the 19th century.

answer: refuted