question: Are both Promenaea and Machaeranthera from North America?
answer: no
context: Title: Machaeranthera
  Passage: Machaeranthera is a genus of North American flowering plants in the daisy family which are known by the common name tansyaster.
  Title: Promenaea
  Passage: Promenaea is a genus of flowering plants from the orchid family, Orchidaceae.  It contains 18 currently accepted species (including one that is apparently extinct), all endemic to Brazil.
citations: Machaeranthera Promenaea