dat

• Det

  that (neuter); referring to a thing or a person further away.

• Pron
• Conj

gebouw

building, structure, construction

op

• Adv

  1. up
  2. onto, up onto
  3. Used in separative verbs meaning “to go away” with rude connotations.

• Prep
• Adj

de

• Article

  the (definite article, masculine and feminine singular, plural)

• Prep

hoek

1. corner
2. angle
3. hook

is

• Verb

  third-person singular present indicative of zijn; is, equals

• Adv

een

• Article

  Placed before a singular noun, indicating a general case of a person or thing: a, an. Compare with de and het.

• Num
• Noun

geheime

1. inflection of geheim:
2. inflection of geheim:
3. inflection of geheim: