With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Dark Knight features the character Batman as the main protagonist.
text_B: The Island Princess -LRB- La principessa delle Canarie -RRB- is a 1954 Italian-Spanish comedy film directed by Paolo Moffa .. Paolo Moffa. Paolo Moffa. comedy film. comedy film
not_related.