Given a unigram document language model M$1$ with word probabilities: $\{$dog $=0\mathrm{.}64,$ fights $=0\mathrm{.}84,$ cat $=0\mathrm{.}84,$ chases $=0\mathrm{.}70,$ mouse $=0\mathrm{.}83\}$ and a unigram document language model M$2$ with word probabilities: $\{$dog $=0\mathrm{.}21,$ fights $=0\mathrm{.}82,$ cat $=0\mathrm{.}58,$ chases $=0\mathrm{.}76,$ mouse $=0\mathrm{.}79\},$ compute the likelihood ratio P$($q$|$M$1)/$ P$($q$|$M$2)$ of the query 'cat chases mouse'.