Inventories from Q1 GDP

Angrybear has an analysis on inventories from the GDP report.

How much of the inventory growth is domestic and how much is imports, especially oil? Inventories of imports will reduce future foreign production and future imports and add to future GDP. Crude inventories surged at the end of the quarter. Are we also seeing a stockpiling of Chinese imports in expectation of future increases in import and export tariffs and currency valuations? Is there a breakdown on import inventories anywhere?