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

### Instruction:
What is the sum of heat for christophe lebon when lane is less than 4?

### Inputs:
table_name: table, columns: ['Rank', 'Heat', 'Lane', 'Name', 'Nationality', 'Time']

### Response:
SELECT COUNT Heat FROM table WHERE Lane < 4 AND Name = christophe lebon