You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Hindu_philosophy

Context:
The Mīmāṃsā school has several subschools defined by epistemology. The Prābhākara subschool of Mīmāṃsā considered five epistemically reliable means to gaining knowledge: pratyakṣa (perception), anumāṇa (inference), upamāṇa (comparison and analogy), arthāpatti (postulation, derivation from circumstances), and śabda (word, testimony of past or present reliable experts). The Kumārila Bhaṭṭa sub-school of Mīmāṃsā added sixth to its canon of reliable epistemology - anupalabdi (non-perception, negative/cognitive proof).

Question:
How many ways does the Prabhakara subschool of Mimamsa say there are to gain knowledge?

five