I want to know the answer to the following question:
In what period did Vyakarana begin?
All the background I'm provided with is that "The Sanskrit grammatical tradition, Vyākaraṇa, one of the six Vedangas, began in the late Vedic period and culminated in the Aṣṭādhyāyī of Pāṇini, which consists of 3990 sutras (ca.". Is that enough to answer the question?
Answer: yes