The problem can be of various types.
the solution scheme needs to find answers to the following questions: -whether the verb + preposition combination is a true VPC, as opposed to the preposition being used to take care of an intransitive verb; -how to identify the VPC even when the preposition is not adjacent to the underlying verb; -how to identify the exact sense of the VPC, given that the same VPC may have multiple senses, as per WordNet; -how to choose the proper translation in the target language.