Definition: You will be given three sentences. Read them, then identify a noun phrase (person, place, or thing) or event that is shared between all three sentences. As the output, write the span of the text corresponding to that phrase in each sentence. Keep the order of the sentences, that is, your answer should look like: 1: *a phras from sentence 1e* 2: *a phras from sentence 2* 3: *a phrase from sentence 3*
Input: 1: Memristors do n't require a silicon layer and different materials can be used as a substrate . 2: This could create a new class of microchips , that could eventually be integrated in everyday items such as windows , clothes or even coffee cups . 3: Memristor-based chips would n't require silicon , so we could see computers in windows , textiles or even coffee cups .

1: Memristors 2: a new class of microchips 3: Memristor-based chips