Such sentences are informative, but in most case of paper dictionaries such as Iwanami, the examples are fragmentary to save spaces (in Iwanami, an average of 4 words).
features for each target word w, we used the surface form, the base form, the POS tag, and the coarse POS categories, such as nouns, verbs, and adjectives of w. Then we also used bag-of-words in the same sentence.