Assertion: pda's feature | /r/HasProperty | offered on smartphone
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text: An intelligent digital assistant is a software service, possibly coupled with a specialized hardware device, such as a smart speaker, or simply a feature offered on a general purpose computing device such as a personal computer, tablet, smartphone, or wearable computer (such as a digital wristwatch), which offers some interesting set of the abilities of a traditional, human assistant, most notably answering questions and performing tasks using voice and natural language processing (NLP) backed by artificial intelligence (AI).