A cleft (also known as a cleft sentence) is a complex sentence constructed using a focused element preceded by either a special clefting particle or a phrase like "it is" which in turn is followed by a relative clause marked with the complementizer that or "which". This type of complex sentence construction is usually used to bring focus to a particular constituent. An example in English is "It was pizza that he insisted on eating. Gaelic uses a lot of clefts. They typically start with 'S e or 'S annand are followed by a clause starting with the complementizer a: 'S e pizza a dh'ith e
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