I come from a city that is located in the southern part of the country
->I come from a city located in the southern part of the country
The children who attend that school receive a good education
->The children attending that school receive a good education
The scientists who are researching the causes of cancer are making progress
->The scientists researching the causes of cancer are making progress
They live in a house that was built in 1980
->They live in a house built in 1980
We have man apartment which overlooks the park
->We have an apartment overlooking the park
We stood on the bridge which connects the two hales of the building
->We stood on the bridge connecting the two hales of the building