 
 <prompt> In 1938, wetin be the main focus of comic books? Given di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: ```Shorter, black-and-white daily strips start to dey show face early for di 20th century, and e come dey popular for newspapers afta di success of Bud Fisher's Mutt and Jeff for 1907. Humour strips dey reign at first, and for di 1920s and 1930s strips wey get continuing stories for genres like adventure and drama also dey popular. Thin periodicals wey dem dey call comic books show face for di 1930s, at first dem dey print newspaper comic strips; by di end of di decade, original content start to dey dominate. Di success of Action Comics for 1938 and di lead hero Superman mark di beginning of di Golden Age of Comic Books, wey di superhero genre dey prominent.``` 