The Corinthian portico was designed by James Gandon, who was also responsible for the Custom House on the north bank of the Liffey.
The Corinthian portico is a beautiful building. 
mnli hypothesis: The Corinthian portico is a beautiful building.  premise: The Corinthian portico was designed by James Gandon, who was also responsible for the Custom House on the north bank of the Liffey.