user: Identify which instrument is string or percussion: Pakhavaj, Mejoranera

assistant: Mejoranera is string, Pakhavaj is percussion.

user: What is abstract class?

assistant: A generic class that is used only as a template for derived classes, and
that cannot be instantiated.

user: What is Autism and how varied is the spectrum?

assistant: Autism is a highly variable neurodevelopmental disorder that is generally thought to cover a broad and deep spectrum, manifesting very differently from one person to another. Some have high support needs, may be non-speaking, and experience developmental delays; this is more likely with other co-existing diagnoses. Others have relatively low support needs; they may have more typical speech-language and intellectual skills but atypical social/conversation skills, narrowly focused interests, and wordy, pedantic communication.They may still require significant support in some areas of their lives. The spectrum model should not be understood as a continuum running from mild to severe, but instead means that autism can present very differently in each individual.How a person presents can depend on context, and may vary over time.