Task: Named Entity Recognition
Input (English): A man and woman mate. Embryo is C. Embryo grows and develops into a fetus inside the woman's womb. The fetus is born. Begins to grow and develop through infancy and childhood. In the teenage years the human experiences puberty. Reaches sexual maturity. At 18 the human becomes an adult. Adult may procreate continuing the cycle. 
Output (English): embryo ,fetus ,infancy and childhood ,adult