You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "In which state is the center that created the ROI_PAC located?" whose answer is California.
Each document should contain about 30 words, and these documents should contain useful information.

Query: ROI_PAC location
Useful Output:

Doc 1: I need details about ROI_PAC software (how to download it and also want to know about its working mechanism) as I plan to use it in my next
Doc 2: ROI_PAC is located at /usr/local/ROI_PAC_3_0/ROI_PAC, and there is  First, compile some environment variable and path used by ROI_PCA.
Doc 3: ROI_PAC. Here I provide a few insights based on my experience using ROI_PAC for processing InSAR. I will add more as I find time.
Doc 4: roi_pac · RSID0120. Find file. Code. Clone with SSH. Clone with  compute and test of Within-site PAC, whole model with EC ref. 1 month ago.
Doc 5: The vey old ROI_pac software (last release in 2009), has been replaced by the InSAR Scientific Computing Environment (ISCE). The stack