instruction:
In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.
question:
Question: What shape are the eight sides of an octahedra? Answer: triangles
answer:
The eight sides of an octahedra are in the shape of a triangles.


question:
Question: What describes the amount of solute in a solution? Answer: tonicity
answer:
Tonicity describes the amount of solute in a solution.


question:
Question: Vertebrates have evolved more complex digestive systems, with some species having multi-chambered types of what organ? Answer: stomach
answer:

Vertebrates have evolved more complex digestive systems, with some species having multi-chambered types of stomach organ.