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:The ongoing sites of Oxyrhynchus and the Villa of the Papyri offer hope of the discovery of fragments outside the corpus tradition . Sentence 2:Meanwhile , the commentaries , or explanations of the content of the corpus , supply quotations and paraphrases filling in the gap .
[A]: meanwhile


[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


[Q]: Sentence 1:Sometimes the edifice had to be boarded up . Sentence 2:However , in 2002 , as part of the celebrations of the Queen 's Golden Jubilee , the clock tower was again restored .
[A]:
however