instruction:
Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.
question:
patau syndrome affects about one in 25,000 live births.
answer:
patau syndrome


question:
the channel catfish (scientific name:"ictalurus punctatus"), also called the channel cat, is a species of catfish.
answer:
channel catfish


question:
adapiformes are an extinct group of early primates.
answer:

adapiformes