Textual linguistics defines cohesion and coherence as the two main pillars of textuality. While cohesion deals with the surface linguistic links, coherence relates to the underlying meaning. Analyze the following statements about these concepts:

I.Anaphora is a cohesive device where a word in a text refers back to a previously mentioned entity, such as using "it" to refer to "the book."

II.Lexical cohesion can be achieved through the use of hyponyms and hypernyms, creating a semantic chain that maintains the thematic unity of the passage.

III.Coherence is entirely dependent on the presence of explicit conjunctions, meaning a text without "but" or "therefore" cannot be logically understood.

Which statements are correct: