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.

Ex Input:
Sentence 1:This leads to a situation where the displacement through - the - thickness is not necessarily linear and where the plate thickness may change during deformation . Sentence 2:Therefore , Reissner 's theory does not invoke the plane stress condition .

Ex Output:
therefore

Ex Input:
Sentence 1:Lauren said that Andy 's happiness was her only concern . Sentence 2:Then , Gary called to inform Lauren that a new letter regarding Farren had arrived .

Ex Output:
then

Ex Input:
Sentence 1:People in inland areas of the Gulf country were hit by bushfires in November and December 2001 and were anticipating the arrival of Bernie , hoping that it will bring rain to extinguish the fires . Sentence 2:However , Bernie delivered very little rain to the area .

Ex Output:
however