Sentence Parser

I wanted to test this app by using the word up in several different contexts as an adverb adjective a verb and a preposition When doing so as follows the app always parsed up as a preposition Here are the various inputs that I tested Its easy to understand UP meaning toward the sky or at the top of the list but when we awaken in the morning why do we wake up Stir up trouble Get up Up the price Take the up escallator Go up the stairs She sat up She looked up Are the kids up yet The candy is up on the top shelf He watched the sun come up Here is the output result from the app it always indicates the word up as a preposition It Pronoun s Verb easy Adjective to Particle understand Verb UP Preposition Punctuation meaning Verb toward Preposition the Determiner sky Noun or Conjunction at Preposition the Determiner top Noun of Preposition the Determiner list Noun Punctuation but Conjunction when Pronoun we Pronoun awaken Verb in Preposition the Determiner morning Noun Punctuation why Pronoun do Verb we Pronoun wake Verb up Preposition Sentence Terminator Stir Noun up Preposition trouble Noun Sentence Terminator Get Verb up Preposition Sentence Terminator Up Preposition the Determiner price Noun Sentence Terminator Take Verb the Determiner up Preposition escallator Noun Sentence Terminator Go Verb up Preposition the Determiner stairs Noun Sentence Terminator She Pronoun sat Verb up Preposition Sentence Terminator She Pronoun looked Verb up Preposition Sentence Terminator Are Verb the Determiner kids Noun up Preposition yet Adverb Sentence Terminator The Determiner candy Noun is Verb up Preposition on Preposition the Determiner top Adjective shelf Noun Sentence Terminator He Pronoun watched Verb the Determiner sun Noun come Verb up Preposition Bottom line I would like a refund     Not good