In this task, you are given two sentences in the English language (Sentence 1 and Sentence 2). Your task is to identify the connecting word between the two sentences.

Example Input: Sentence 1:He was the only Filipino athlete predicted to win a medal by Sports Illustrated 's Olympic Preview issue . Sentence 2:However , he was defeated by Manyo Plange of Ghana in the Round of 32 , 6 to 3 .
Example Output: however

Example Input: Sentence 1:The symplectic group acts transitively on complex structures by conjugation . Sentence 2:Moreover , the subgroup commuting with J is naturally identified with the unitary group for the corresponding complex inner product space .
Example Output: moreover

Example Input: Sentence 1:During the growing season , the sun shines on a vertical surface at an extreme angle such that much less light is available to crops than when they are planted on flat land . Sentence 2:Therefore , supplemental light would be required .
Example Output:
therefore