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ascertain [ascertained, ascertaining, ascertains]▼(find out; discover or establish)verb[UK: ˌæ.sə.ˈteɪn] [US: ˌæ.sər.ˈteɪn]
witness [witnessed, witnessing, witnesses]▼((transitive) to take as evidence)verb[UK: ˈwɪt.nəs] [US: ˈwɪt.nəs]
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