Your sentence
Je+parle+à+Paul.+→+Je+lui+parle.
Words in this sentence
parler
to speak, talk; to be able to communicate in a language; to speak; to cant; (of a coat of arms) to make a pun of its bearer's name
Verb
à
to (destination); at, in, on (said of a particular place); at (said of a particular time); to (until); on the, to (some directions); from (origin); of (belonging to); by; to (used to express something not completed); used to make compound nouns to state what something is used for; …
Preposition
lui
him, he, it; the third-person masculine singular personal pronoun used after a preposition, or as the predicate of a linking verb, or when disjoined from a sentence, or as a stressed subject; him, her; the third-person singular personal pronoun used as an indirect object
Pronoun