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.
One example is below.
Q: Sentence 1:A suicide car bomber detonated his bomb as he attempted to drive an SUV into a Somali military camp . Sentence 2:However the vehicle exploded at the entrance when police guards opened fire on the insurgent driving the vehicle .
A: however
Rationale: The above sentence is connected by the word 'however'.
Q: Sentence 1:Two days later , it was announced he and Borussia Dortmund would not be extending their contract after it expired after 30 July 2016 . Sentence 2:However , on 1 July 2015 , he signed a contract extension to keep him at the club until 2017 .
A:
however