passages.id: 257
passages.type: sentence
passages.text: However , no study to date has examined whether or not they understand conceptual metaphors ( i.e . mappings between conceptual structures ) , which could be the building blocks of metaphoric thinking and understanding .
entities.id: 258
entities.type: intervention
entities.text: conceptual metaphors
entities.id: 259
entities.type: outcome
entities.text: conceptual metaphors