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.

Ex Input:
Sentence 1:Every summer , there is usually a large procession of all the students moving around the area as they travel home . Sentence 2:However , the group is reduced to three students : the theologian Khaliava , the philosopher Khoma Brut , and the rhetorician Tibery Gorobets .

Ex Output:
however


Ex Input:
Sentence 1:However , their stories , composed in verse form , were not written down until the subsequent Sassanian period . Sentence 2:In fact , there is no known Parthian - language literature that survives in original form , since it was written down in the following centuries .

Ex Output:
in fact


Ex Input:
Sentence 1:Its construction was the greatest single factor in making anthracite coal one of America 's most important domestic and industrial fuels . Sentence 2:However , the operational life of the canal was short .

Ex Output:

however