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:So you learn to pay attention to personal relationships . Sentence 2:But that does n't mean you lie to people .
but

Sentence 1:A table was then consulted to provide the exact measure . Sentence 2:However , this system was difficult to construct and used by few .
however

Sentence 1:He learnt Hindustani classical music on sarod from the Senia gharana master Ustad Keramatullah Khan . Sentence 2:However , he chose a different instrument for expressing the music he learnt .
however