el

masculine singular definite article; the

es

• Verb

  third-person singular present indicative of ser

• Noun

en

1. in, at, on
2. in (a time)
3. in (a language)
4. used after some verbs and translated by various prepositions in English
5. in (in various expressions)

estructura

• Noun

  structure

• Verb

a la

a la; in the style or manner of

introducción

1. introduction
2. opening (of series)

del

of the, from the (+ a masculine noun in singular).

movimiento

1. movement (physical motion between points in space)
2. movement (a trend in various fields or social categories)
3. transaction
4. movement (a large division of a larger composition)
5. movement