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BELLAGHY, NORTHERN IRELAND - MAY 09: Camilla, Duchess of Cornwall joins a group of local children during story time, during a visit with the Prince of Wales to the new centre in Bellaghy, dedicated to Seamus Heaney during their visit on May 9, 2017 in Bellaghy, Northern Ireland. (Photo by Liam McBurney - WPA Pool/Getty Images)

BELLAGHY, NORTHERN IRELAND - MAY 09: Camilla, Duchess of Cornwall  joins a group of local children during story time, during a visit with the Prince of Wales to the new centre in Bellaghy, dedicated to Seamus Heaney during their visit on May 9, 2017 in Bellaghy, Northern Ireland. (Photo by Liam McBurney - WPA Pool/Getty Images)

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BELLAGHY, NORTHERN IRELAND - MAY 09: Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall arrive for a tour of the new centre in Bellaghy, dedicated to poet Seamus Heaney during their visit on May 9, 2017 in Bellaghy, Northern Ireland. (Photo by Liam McBurney - WPA Pool/Getty Images)

BELLAGHY, NORTHERN IRELAND - MAY 09: Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall arrive for a tour of the new centre in Bellaghy, dedicated to poet Seamus Heaney during their visit on May 9, 2017 in Bellaghy, Northern Ireland. (Photo by Liam McBurney - WPA Pool/Getty Images)

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BELLAGHY, NORTHERN IRELAND - MAY 09: Prince Charles, Prince of Wales sits next to Seamus Heaney's wife Marie in the Helicon, a performance space, during a visit with Camilla, Duchess of Cornwall to the new centre in Bellaghy, dedicated to the poet during their visit on May 9, 2017 in Bellaghy, Northern Ireland. (Photo by Liam McBurney - WPA Pool/Getty Images)

BELLAGHY, NORTHERN IRELAND - MAY 09: Prince Charles, Prince of Wales sits next to Seamus Heaney's wife Marie in the Helicon, a performance space, during a visit with Camilla,  Duchess of Cornwall to the new centre in Bellaghy, dedicated to the poet during their visit on May 9, 2017 in Bellaghy, Northern Ireland. (Photo by Liam McBurney - WPA Pool/Getty Images)

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BELLAGHY, NORTHERN IRELAND - MAY 09: Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall speaking with Seamus Heaney's wife Marie during a tour of the new centre, dedicated to the poet during their visit on May 9, 2017 in Bellaghy, Northern Ireland. (Photo by Liam McBurney - WPA Pool/Getty Images)

BELLAGHY, NORTHERN IRELAND - MAY 09: Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall speaking with Seamus Heaney's wife Marie during a tour of the new centre, dedicated to the poet during their visit on May 9, 2017 in Bellaghy, Northern Ireland. (Photo by Liam McBurney - WPA Pool/Getty Images)

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BELLAGHY, NORTHERN IRELAND - MAY 09: Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall during a tour of the new visitor centre dedicated to poet Seamus Heaney during their visit on May 9, 2017 in Bellaghy, Northern Ireland.. (Photo by Liam McBurney - WPA Pool/Getty Images)

BELLAGHY, NORTHERN IRELAND - MAY 09: Prince Charles,  Prince of Wales and Camilla,  Duchess of Cornwall during a tour of the new visitor centre dedicated to poet Seamus Heaney during their visit on May 9, 2017 in Bellaghy, Northern Ireland..  (Photo by Liam McBurney - WPA Pool/Getty Images)