The other day I came home, and only my mother was at home. She was in her room reading, so when I opened the front door, I yelled "Hello, are you alive?" To which I received no response. As I neared her room, I could see her feet at the end of her bed. At which point I again questioned, "Are you alive." This time she answered, "Of course I am alive. Can't you tell by my alive face?" This is what I saw.
After a short deliberation, we decided that she was indeed alive. She also went through other poses to convince me of this.