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.

[Q]: Sentence 1:His whole body is covered in a texture that resembles the cloudy sky . Sentence 2:He therefore strongly resembles a walking Magritte painting .
[A]: therefore


[Q]: Sentence 1:He preferred negotiation and dialogue to senseless massacre , and he and Tancred tried to protect some of the Muslims of Jerusalem by sheltering them in the Temple . Sentence 2:However , these Muslims too were soon killed by other crusaders , enfuriating Gaston and Tancred .
[A]: however


[Q]: Sentence 1:The collector current does not remain constant with variation in temperature or power supply voltage . Sentence 2:Therefore , the operating point is unstable .
[A]:
therefore