The following are stories and questions about them. Each story is followed by a question and answer to a given question.

Story: Pitch is an auditory sensation in which a listener assigns musical tones to relative positions on a musical scale based primarily on their perception of the frequency of vibration. Pitch is closely related to frequency, but the two are not equivalent. Frequency is an objective, scientific attribute that can be measured. Pitch is each person's subjective perception of a sound, which cannot be directly measured. However, this does not necessarily mean that most people won't agree on which notes are higher and lower. 

This creates a linear pitch space in which octaves have size 12, semitones (the distance between adjacent keys on the piano keyboard) have size 1, and A440 is assigned the number 69. (See Frequencies of notes.) Distance in this space corresponds to musical intervals as understood by musicians. An equal-tempered semitone is subdivided into 100 cents. The system is flexible enough to include "microtones" not found on standard piano keyboards. For example, the pitch halfway between C (60) and C♯ (61) can be labeled 60.5.

Question: What is pitch?
Answer:an auditory sensation

Question: what is it related to?
Answer:musical tones

Question: What is pitch closely related to?
Answer:to frequency

Question: Are they equals?
Answer:no

Question: Is frequency subjective?
Answer:no

Question: What is it?
Answer:objective

Question: Then what is subjective?
Answer:Pitch

Question: Which one is  scientific?
Answer:Frequency

Question: Can you measure pitch?
Answer:no

Question: How about Frequency?
Answer:yes

Question: Do most agree on high and low notes?
Answer:yes

Question: What are semitones?
Answer:the distance between adjacent keys on the piano keyboard

Question: What is an equal tempered semitone?
Answer:An equal-tempered semitone is subdivided into 100 cents

Question: is it flexible?
Answer:Yes

Question: to include what?
Answer:
microtones