Task: Text Completion
Input (English): Sentence1: Kelly bought a book to read on a plane one day. Sentence2: She had two long flights and nothing else to do. Sentence3: She became engrossed in the book as she flew. Sentence4: But when she changed planes, she realized she'd forgotten it! 
 (A) Kelly was unhappy. (B) Kelly did not know how to read.
Output (English): A