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: But Mitchell said aviation regulations only required a physical and not a psychiatric medical examination , looking at a potential pilot 's fitness to fly in terms of factors such as heart attack risk . 2: Those being examined were legally required to declare any mental disorder , but there was no standard psych testing from a regulatory point of view , he said , with airlines and industry bodies failing to reach consensus on types of tests to be used . 3: Aviation expert Simon Mitchell says regulations do not require formal psych testing .

1: a psychiatric medical examination 2: standard psych testing 3: formal psych testing