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 principle ( or , theorem ) can be generalized . Sentence 2:Thus , let us consider a system S in the form of a closed domain of finite volume in the Euclidean space .

Ex Output:
thus


Ex Input:
Sentence 1:There is not one system of doing it with different towns doing it differently . Sentence 2:For example , in the town of Santiago , students are only identified as speech only or sign only and learn in different environments .

Ex Output:
for example


Ex Input:
Sentence 1:on the last day of the season , a loss that ended hopes of lasting the whole season undefeated at home . Sentence 2:Yet , it was the club 's highest finished since 2003 and promised much for the future .

Ex Output:

yet