For example, one can define a feature j by where each event in the event space is a pair (c , p ) of same-sentence tokens in comparable English text, all pairs being equally likely.
to estimate Pr(• | •), the denominator counts same-sentence token pairs (c , p ) in the comparable English corpus that translate into the types (c, p), and the numerator counts such pairs that are also related by a prep ←− of pobj ←− path.