To encourage every sentence to contain at least one verb, we can penalize if the expected number of verbs under the q distribution is less than 1.
if "verb" is represented by tag number v, for sentence i we penalize unless: In the notation of Equation 5, these penalties correspond to: an n-row A matrix, where row i has −1's to select exactly the portion of m from Equation 7, and a limit b = −1.