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:Many tricks or patterns are generated from mixing cascade and reverse cascade throws . Sentence 2:For example , tennis ( siteswap : 3 ) one ball is thrown over ( reverse ) while the other two are thrown under ( inside ) .

Ex Output:
for example


Ex Input:
Sentence 1:According to archaeologist Phil C. Orr , these human deposits were about 12,000 years old , for they were under 420 mm. of speleothem mineral deposits . Sentence 2:Nevertheless , there are also many other human bones in these caves , some of them from the more recent periods .

Ex Output:
nevertheless


Ex Input:
Sentence 1:Some websites maintain that PCGS trademarked First Strike . Sentence 2:However , a search of the U.S. Patent Office 's website does not evidence that , and a search of the PGCS website did not find any claim of having trademarked First Strike .

Ex Output:

however