Assertion: speaker's control | /r/CapableOf | remove the mute button
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Source sentences:
text: Firstly the controls on the top of the speaker changed from 6 to 5 individual buttons, removing the mute button and AUX button (The speaker changed to AUX automatically when it received a 3.5mm input) and added a multifunction button which could perform a variety of functions such as play, pause, and answer calls (due to the added speakerphone capability).