| http://www.w3.org/ns/prov#value | - As today is a Sunday, we will start off with a simple one:ClassmarkerClassmarker is an online quizmaker that offers free quizzes (supported by advertisement) with upgrades (including removing the advertisement) for an additional fee.Type: online serviceCost: Free with paid upgradesFeatures: Multiple choice quiz, free text quiz or punctuation quiz.Interoperability: NoneSystem requirements: Any browse
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