For the who's whom of who's whom
1) This is the baby. She looks like a turtle and has a giant bump on her head.
2) This is Nakamura san, the terribly polite nurse who delivered the child in the doctor's absence. She's great.
3) This is Tetsuya, my best English student, holding a baby (coincidently our baby) for the very first time. He's got a long career of baby holding ahead of him, it looks like.