Adjectives and Adverb phrases relate to prepositional phrases because if you remember what an adjective is, it describes a noun and then an adverb i believe can describe a verb, adjective, and other adverbs. Both adjective and adverb phrases contain prepositions, there fore relating them to prepositional phrases.... I hope this is what you were looking for and answered your question... :)
Valentine's day is about love and joy and happiness for your love ones.valentines day is also about peace and blessings to you and your family. That's why I love Valentine's day. You can heve party's . Valentine's day is all about fun.