Context: In Czech, nouns and adjectives are declined into one of seven grammatical cases. Nouns are inflected to indicate their use in a sentence. A nominative–accusative language, Czech marks subject nouns with nominative case and object nouns with accusative case. The genitive case marks possessive nouns and some types of movement. The remaining cases (instrumental, locative, vocative and dative) indicate semantic relationships, such as secondary objects, movement or position (dative case) and accompaniment (instrumental case). An adjective's case agrees with that of the noun it describes. When Czech children learn their language's declension patterns, the cases are referred to by number:

Question: How many grammatical cases can nouns and adjectives be declined into in Czech?
Answer: seven

Question: When are nouns in Czech inflected?
Answer: to indicate their use in a sentence

Question: How does Czech mark subject nouns?
Answer: with nominative case

Question: What nouns does Czech use the accusative case to mark?
Answer: object

Question: What must an adjective's case agree with in Czech?
Answer: the noun it describes

Question: What age do children usually begin understanding grammatical cases?
Answer: Unanswerable

Question: What happens to case numbers to indicate them in a sentence?
Answer: Unanswerable

Question: What type of instrumental music do Czech children learn in school?
Answer: Unanswerable

Question: What are three types of instrumental cases?
Answer: Unanswerable

Question: What does a secondary object agree with?
Answer: Unanswerable