Task: Question Answering
Input (English): Background Paragraph: Middle adulthood lasts from the mid-30s to the mid-60s. During this stage of life, many people raise a family and strive to attain career goals. They start showing physical signs of aging, such as wrinkles and gray hair. Typically, vision, strength and reaction time start declining. Diseases such as type 2 diabetes, cardiovascular or heart disease, and cancer are often diagnosed during this stage of life. These diseases are also the chief causes of death in middle adulthood. 
Story: Adam and his older brother Chris were born almost 15 years apart from each other. Adam is 27 now which means Chris is 41.  Lately Chris has started noticing grey hairs come in. When Adam and him play games together Chris also seems to lose more often now even though historically he has always been better. 
Question: Which brother is likely experiencing a decline in strength, Adam or Chris?
Output (English): Chris.