Assertion: bagpipe's chanter | /r/HasProperty | topped with 6 x 4 inch plastic box
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Source sentences:
text: Eventually, with the advance of technology, he was able to downsize it, till by the early 1990s, it consisted of a chanter topped with a 6 x 4 inch plastic box which housed all the components, including a 2-inch speaker, all powered by a 9 volt battery.