shot Lady Derby and three members of staff
... that in 1952 a 19-year-old footman shot Lady Derby and three members of staff at Knowsley Hall in England?
... that in 1952 a 19-year-old footman <b id="mwBZw"><a href="./Knowsley_Hall_shootings" id="mwBZ0" rel="mw:WikiLink" title="Knowsley Hall shootings">shot Lady Derby and three members of staff</a></b> at <a href="./Knowsley_Hall" id="mwBZ4" rel="mw:WikiLink" title="Knowsley Hall">Knowsley Hall</a> in England?