somewhere

Probably somewhere near Tokyo.

'Somewhere' is a non-specific place.  In the example, we are talking about a place near Tokyo, but we don't know the exact location.  We can use this word to give a general location.  Notice the following:

1. Do you want to go somewhere with beaches for vacation?
   
2. She lives somewhere near the post office.
   

country

Would you buy a house in the city or the country?

'Country' is the opposite of the city.  It is a place where there are animals, trees, farms, rivers, and many other natural things.  Notice the following:

1. He lived in the country until he was 15 years old.
   
2. On the weekends, we go to our house in the country.
   

further out

Well, a little further out of the middle of Tokyo.

If a place is a greater distance away from the middle of Tokyo then it is 'further out.'  We use this word to talk about distance away from something important, like a city.  Notice the following:

1. Every day she swam a little further out from the side of the pool.
   
2. I thought you lived further out than this.
   

crowded

Some place not too crowded.

If a place is 'crowded' it has a lot of people in it.  Usually in crowded places it is difficult to move because of all the people.  Notice the following:

1. The bar was too crowded and there was no place to sit.
   
2. I thought the concert would be really crowded, but there weren't a lot of people there at all.
   

outside dog

Well, maybe a dog, but an outside dog.

An 'outside dog' is a dog that lives outside of the house, maybe in a small dog house or a kennel.  This would be a dog that could live in different types of weather, rain or snow.  Notice the following:

1. Because our dog is so big he has to be an outside dog.
   
2. We have an outside dog to protect the house.