From the passage provided, extract where the Fembe language is spoken.
Fembe, or Agala, is a Trans–New Guinea language of New Guinea, spoken in the plains east of the Strickland River.
Strickland River
<START_INST>From the passage provided, extract where the Fembe language is spoken.<END_INST><START_CTX>Fembe, or Agala, is a Trans–New Guinea language of New Guinea, spoken in the plains east of the Strickland River.<END_CTX><START_A>Strickland River<END_A>