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:Shia Islam historically has had minimal presence in South Africa , which is heavily Sunni with some small Ahmadiyya and Shia minority . Sentence 2:However , following the 1979 Iranian Revolution there were allegedly some sympathetic conversions of Sunnis to Shiism .
however