I had never seen a student __________ could run so fast!
I had never seen a student WHO / THAT could run so fast!
Anthony´s party, which is the same day as Roberto´s, is at 7:00 pm.
Non-defining
Rebeca, __________ job as a Head Teacher gives her many headaches, went to a Alberite last week.
Rebeca, WHOSE job as a Head Teacher gives her many headaches, went to a Alberite last week.
I know a man who played for Athletic Bilbao in the 80s.
DEFINING. Of all men, this one played for Athletic Bilbao.
Calagurris is the place where the Romans lived.
Defining
I love La Rioja, whose landscapes are simply spectacular.
NON-DEFINING. We are describing La Rioja.
Teacher Patricia, who was Head of Studies, loves walking in the mountains.
non-Defining
Because I am unemployed I am currently living at my parents' house, _________ is an annoying situation.
Because I am unemployed I am currently living at my parents' house, WHICH is an annoying situation.
The King of Spain, who loves sailing, participated in the Olympics.
NON-DEFINING. There is only one king of Spain.
My English teacher, who loves Ireland, likes to sing folk songs.
Non defining
The Concept , __________ older students go to dance, is very expensive.
The Concept , where older students go to dance, is very expensive.
Santiago, __________ teaches History, hates the rain.
Santiago, WHO teaches History, hates the rain.
The king of England who created the Anglican Church died in 1547.
DEFINING: Of all kings of England in history, that one. It was Henry VIII.
Colombia, which is a beautiful country, has a population of 52,4 million people.
Non defining