tell me the chip models produced by the company named "Nokia Corporation".
select chip_model from phone where company_name = "Nokia Corporation"
Okay, tell me the RAM size of those chip models.
select t1.ram_mib from chip_model as t1 join phone as t2 on t1.model_name = t2.chip_model where t2.company_name = "Nokia Corporation";
So, what is maximum and minimum RAM size?
select max(t1.ram_mib), min(t1.ram_mib) from chip_model as t1 join phone as t2 on t1.model_name = t2.chip_model where t2.company_name = "Nokia Corporation"