el/la que = is the one that
Papa is the one that always gets worried.
Papa es el que always gets worried.
el/la que = is the one that
Mom is the one that keeps calm.
Mom es la que keeps calm.
el/la que = is the one that
I’m the one that made dinner.
Yo soy el que made dinner.
Articles
You’re (you are) the one that was there.
You eras la que was there.
lo que = what (usually in middle of sentence
I am what I am.
Soy lo que soy.
lo que = what (usually in middle of sentence
It is what it is.
Es lo que es.
es lo que = It is what or It’s what
I want what he has.
I want lo que he has.
es lo que = It is what or It’s what
It’s what I want.
Es lo que I want.