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

### Instruction:
What is the Lower index Kcal/ Nm 3 entry, for the row with entries of an Upper index Kcal/ Nm 3 smaller than 19,376, and a Lower index MJ/ Nm 3 of 74.54?

### Inputs:
table_name: table, columns: ['Fuel gas', 'Upper index Kcal/ Nm 3', 'Lower index Kcal/ Nm 3', 'Upper index MJ/ Nm 3', 'Lower index MJ/ Nm 3']

### Response:
SELECT AVG Lower index Kcal/ Nm 3 FROM table WHERE Lower index MJ/ Nm 3 = 74.54 AND Upper index Kcal/ Nm 3 < 19,376