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.

Sentence 1:Burs are also classified by the type of shank . Sentence 2:For instance a latch type , or right angle bur , is only used in the slow speed handpiece with contra - angle attachment .
for instance

Sentence 1:Until the early 20th century this patois prevailed . Sentence 2:Therefore , French language progressive penetration into local culture should not only be analysed as a result of the industrialisation and urbanisation of the area but should also be considered in terms of public education policies .
therefore

Sentence 1:Against the Detroit Lions in the following week , Peterson rushed 25 times for 111 yards , but lost two fumbles . Sentence 2:However , Peterson bounced back from the fumbles the following week against the Bears , totaling 22 carries for 121 yards and two touchdowns .

however