This is the 2782nd most frequent Dutch word.
sophie
The Dutch word "Sophie" is a given name and does not have a specific definition apart from being a proper noun.
Here 'Sophie' is a proper noun and refers to the name of a person.
Sophie is aan het studeren.
Sophie is studying.
In this case, 'Sophie' remains a proper noun and acts as the referent to whom something is dedicated.
De film was aan Sophie opgedragen.
The movie was dedicated to Sophie.
Again, 'Sophie' serves as the subject proper noun, identifying the person performing the action.