cleaner fact freshening, which also works in corner cases, e.g. if two backquoted facts have the same name (but have different variable indices)
lcp paulson
norbert.schirmer@web.de schirmer
schirmer@in.tum.de schirmer
urbanc@in.tum.de urbanc
nipkow@lapbroy100.local nipkow
chaieb@chaieb-laptop chaieb
immler@in.tum.de immler
tsewell@rubicon.NSW.bigpond.net.au tsewell
tsewell@nicta.com.au tsewell
kaliszyk@in.tum.de kaliszyk
Philipp\ Meyer meyerp
Timothy\ Bourke tbourke
noschinl@in.tum.de noschinl
brianh@cs.pdx.edu huffman