1.
That is the park. There is a lake there. (Where)
That
is the park where there is a lake.
2. This is the person.
I saw him last night. (whom)
This is the person whom
I saw last night.
3. I saw friend yesterday. Her brother
lives in Spain.(whose)
I saw a friend yesterday whose
brother lives in Spain.
4. This is the house. I was born
there. (where)
This is the house where I was born.
5.
She is the woman. I wanted to see her. (whom)
She is
the woman whom I wanted to see.