Given the task definition and input, reply with output. 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:Alginate is used in dental circumstances when less accuracy is required . Sentence 2:For example , this includes the creation of study casts to plan dental cases and design prosthesis , and also to create the primary and working impressions for denture construction .
for example