Refer multiple columns in a single calculated column

I want to create a single calculated column having multiple columns and their respective text string  and display them in a card like:

Country name: dataset[country name]

State name: dataset[State name]

City name: dataset[city name]

I'm trying to use

calcol=(concatenate("Country name:",dataset[country name]) , concatenate("state name:",dataset[state name]) )

but getting error

Let me know how can i do it in power bi