Hello, Could you help me with one grammar problem in the following text? Their business is in Berlin, and they’re taxi drivers. Their company name is Rad and their special taxi-bus is good for families and big groups. This text is from a Speakout textbook. Students are supposed to make questions for this text and one suggested question in the Teacher’s Book is What’s their company called? The author also says to encourage students to use this form instead of What’s their company’s name? However, in the text itself it says their company name instead of their company’s name. Does it make no difference whether you use ‘s or not? And if not, then would it be OK to ask What’s their company name?