Taken from this stackoverflow question:

http://stackoverflow.com/questions/31381380/genie-how-to-return-an-array-of-unowned-strings

There seems to be no way in the current Genie syntax to declare an (owned) array of a unowned data type.

[indent=4]

init
    var str = "ABC"
    unowned_string_array: array of (unowned string) = repeat (str, 5)

def repeat (s: string, n: int): array of (unowned string)
    a: array of (unowned string) = new array of (unowned string)[n]
    for var i = 1 to n
        a[i] = s
    return a

The error messages are:

unowned.gs:6.36-6.36: error: syntax error, expected identifier
    unowned_string_array: array of (unowned string) = repeat (str, 5)
                                   ^
unowned.gs:8.42-8.42: error: syntax error, expected identifier
def repeat (s: string, n: int): array of (unowned string)
                                         ^
Compilation failed: 2 error(s), 0 warning(s)