Who was the prime minister of Spain when Spain joined NATO?
Spain joined NATO by referendum in 1986. The prime minister of Spain at the time was Felipe Gonzalez.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Who was the prime minister of Spain when Spain joined NATO?
### Input: 
### Response: Spain joined NATO by referendum in 1986. The prime minister of Spain at the time was Felipe Gonzalez.