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:In cultures where the sex of the child is of utmost importance , parents are more likely to abandon a baby of the undesired sex . Sentence 2:Similarly , people may choose to pursue the , often controversial , option of sex - selective abortion .
similarly

Sentence 1:A group of hand surgeons realized in the 1970s that the level of injury did not predict the number of available muscles in the upper limb very well . Sentence 2:Therefore , the international classification was established in 1979 , at the Edinburgh meeting .
therefore

Sentence 1:Between 2010 and 2013 , Blackwell discontinued using the Buell motorcycles . Sentence 2:However , in 2014 , Blackwell returned to using the Buells in his stunt shows .

however