TASK DEFINITION: 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.
PROBLEM: Question: What scale is used to succinctly communicate the acidity or basicity of a solution? Answer: ph

SOLUTION: The ph scale is used to succinctly communicate the acidity or basicity of a solution.

PROBLEM: Question: Catecholamines are a class of amine hormones synthesised form which amino acid? Answer: tyrosine

SOLUTION: Catecholamines are a class of amine hormones that when synthesised form the amino acid tyrosine.

PROBLEM: Question: What does the color of soil indicate? Answer: fertility

SOLUTION:
Fertility does the color of soil indicate.