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gptkbp:instance_of
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gptkb:piano
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gptkbp:accessories
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gptkb:gymnasium
owner's manual
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gptkbp:action
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responsive touch
direct blow action
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gptkbp:availability
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new and used
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gptkbp:color
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gptkb:black
polished mahogany
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gptkbp:design
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traditional
classic style
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gptkbp:dimensions
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depth 22 inches
height 45 inches
width 58 inches
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gptkbp:features
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full-size keys
sustain pedal
wooden action
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gptkbp:fuselage_material
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spruce
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gptkbp:historical_significance
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popular in the 1980s
known for durability
often recommended by teachers
used in music schools
part of Kawai's legacy
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https://www.w3.org/2000/01/rdf-schema#label
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Kawai K-31
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gptkbp:is_popular_in
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gptkb:Europe
gptkb:Japan
gptkb:USA
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gptkbp:maintenance
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requires regular tuning
requires humidity control
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gptkbp:manufacturer
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gptkb:Kawai
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gptkbp:material
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gptkb:steel
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gptkbp:model
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gptkb:Kawai_K-30
gptkb:Kawai_K-40
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gptkbp:price_range
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mid-range
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gptkbp:production_status
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discontinued
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gptkbp:reviews
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generally positive
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gptkbp:sound
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rich tone
good projection
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gptkbp:successor
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gptkb:Kawai_K-50
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gptkbp:sustain_pedal
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damper pedal
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gptkbp:target_market
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home use
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gptkbp:type
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upright piano
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gptkbp:warranty
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limited warranty
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gptkbp:weight
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approximately 400 pounds
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gptkbp:year_established
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gptkb:unknown
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gptkbp:bfsParent
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gptkb:Kawai_K._K.
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gptkbp:bfsLayer
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8
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