Simplify the following text for a Grade 9 native English-speaking person.
Original: Montaut , PyrÃ nÃ es-Atlantiques is a commune of the PyrÃ nÃ es-Atlantiques dÃ partement in the southwestern part of France .
Simplified: Momas is a commune in the PyrÃ nÃ es-Atlantiques department in south-western France .