<https://basi-spanish.com/intermediate-spanish-review-lesson-1-practice-using-el-preterito-pluscuamperfecto/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://basi-spanish.com/intermediate-spanish-review-lesson-1-practice-using-el-preterito-pluscuamperfecto/>