PROCESS XML WITH MULTIPLE XSL using XSLT

Write an XSLT that: 1) imports XML 1 file 2) apply XSLT 1 to XML 1 and write XML 2 output (should have the choice to save the output file or store it in a variable to reuse it to process the XSLT 2 e.t.c) 3) apply XSLT 2 to XML 2 and write XML 3 output 4) apply XSLT 3 to XML 3 and write XML 4 output 5) apply XSLT 4 to XML 4 and write XML 5 output.