Task: Discourse Connective Identification
Input (English): Sentence 1:When he learns that Hornblower 's Sutherland is best suited for this task , having the shallowest draught , he becomes suspicious that Hornblower is after glory and prize money . Sentence 2:Leighton therefore expressly forbids Hornblower from taking any independent action if he sights the French .
Output (English): therefore