"Alright, dear little students." Yamada chuckles as he walks in and begins writing on the board with chalk. "First one to find the mistake in this sentence gets to pick the next text from classic American literature that we read." Compared to usual, the sentence was rather simple. Before was was was, was was is He put the white chalk down and turned to his students. "Any guesses? Or am I going to have to add this to your text for extra credit?"