I have installed Libre Office on OSX but can't find the executable

I installed Libre Office according to the instructions on OSX 10.9.4. I see the folder in “Applications”, and it contains a number of files and subfolders, but I see no executable file. Where is it hidden?

Doesn’t a Mac has a “search” function to search in applications?

But what specifically would I search for? And why should it be hidden and require a search?

Refer the answer here.