Verify the accuracy of the following pairings between Indian constitutional mechanisms and their foreign source documents:
1. The conceptual framework for Fundamental Duties and the ideal of justice was derived from the Irish Constitution.
2. The executive mechanism allowing the suspension of Fundamental Rights during an Emergency was assimilated from the Canadian Constitution.
3. The procedural rule permitting a Joint sitting of the two Houses of Parliament was extracted from the Australian Constitution.
4. The socio-economic mandates detailed in the Directive Principles of State Policy were adopted from the Soviet Constitution.