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

### Instruction:
What's the inception for the country with 25.5 billion USD in assets and an abbreviation of psf?

### Inputs:
table_name: table, columns: ['Country', 'Abbreviation', 'Assets US$Billion', 'Inception', 'Origin']

### Response:
SELECT Inception FROM table WHERE Assets US$Billion = 25.5 AND Abbreviation = psf