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:It features two airframes as gateguard : a Hawker Hunter F. 4 , and a Sikorsky S - 58C , both ex-Belgian Air Force . Sentence 2:Finally , one more Sikorsky S - 58C is stored and used for static displays .
Example Output: finally

Example Input: Sentence 1:The larvae emerge from diapause between late January and mid-March . Sentence 2:However , in high elevations , larvae can hibernate for several years .
Example Output: however

Example Input: Sentence 1:He has written different genres including ghazal , geet , free verse , triolet , essay , short story , nursery rhymes and Children stories . Sentence 2:But his main contribution towards ghazal and geet .
Example Output:
but