Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the sum of Blank Ends for Denmark when less than 42 is the ends lost?

### Inputs:
table_name: table, columns: ['Nation', 'Skip', 'Ends Won', 'Ends Lost', 'Blank Ends', 'Stolen Ends', 'Shot Pct.']

### Response:
SELECT SUM Blank Ends FROM table WHERE Nation = denmark AND Ends Lost < 42