1. A data creating apparatus configured to create learning data for learning proper usage of a plurality of translation candidates corresponding to one word in a source language, the translation candidates being described in a target language, comprising: an input unit configured to input a sentence in the source language; a translation generating unit configured to translate one word in the sentence into the target language, and generate a plurality of translation candidates in the target language with respect to the word and likelihood expressing probability of the translation candidate; a correspondence-information creating unit configured to create a plurality of correspondence information in which the word is associated with the translation candidates, respectively; a determining unit configured to determine whether the likelihood of the translation candidate is larger than a predetermined threshold value; and a learning-data creating unit configured to create the learning data in which another word in the sentence is added to the correspondence information of the translation candidate having the likelihood larger than the threshold value.