[exim] sg and $spam_report

Trying to use the sg command on the return from SpamAssassin to extract
info from the report. The problem is $spam_report has multiple lines and
the sg seems to want to operate on each line individually. What I'd like
to do is extract a string from part of the last line. I added a line at
the end that looks like this:

\t Languages: en de sv

Trying to get the lust after the word languages. How do I do that?

Thanks in advance