Complex sentence: Freemont promises that he will look out for any sign of Eliza as he writes articles about the famous bandit Joaquin Murieta, whose description matches Eliza's lover.
Split into simpler sentences: Freemont promises that he will look out for any sign of Eliza. Freemont writes articles about the famous bandit Joaquin Murieta, whose description matches Eliza's lover.