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.

Input: Consider Input: Sentence 1:The Fe ( II ) - O-O - BH4 bridge is subsequently formed . Sentence 2:On the other hand , formation of this bridge has been modeled assuming that BH4 is located in iron 's first coordination shell and that the iron is not coordinated to any water molecules .

Output: on the other hand

Input: Consider 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 .

Output: therefore

Input: Consider Input: Sentence 1:This is $132,255 more than its 2012 - 13 state BEF to the District . Sentence 2:Additionally , Abington Heights School District received $103,120 in Accountability Block Grant funding to focus on academic achievement and level funding for special education services .
Output: additionally