In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

[Q]: Triaxial fabric is woven with _ sets of yarn whose intersections form equilateral triangles.
[A]: three


[Q]: Most biologists divide the living world into _ Kingdoms.
[A]: five


[Q]: Ozone is a molecule composed of _ atoms of oxygen.
[A]:
three