Premise: Black Widow (Natasha Romanova) . The character was first introduced as a Russian spy , an antagonist of the superhero Iron Man . Scarlett Johansson portrayed the character in the films Iron Man 2 ( 2010 ) , The Avengers ( 2012 ) , Captain America : The Winter Soldier ( 2014 ) , Avengers : Age of Ultron ( 2015 ) and Captain America : Civil War ( 2016 ) as a part of the Marvel Cinematic Universe franchise .
Hypothesis: Black Widow is a character.
Label: ENTAILMENT