What does the sentence "Alma did not visit Edna before both Cleo and Dina" mean ?
Alma, Bess, Cleo, Edna and Dina are friends.
Does it mean, 1a) Alma did not visit Edna before Cleo. 1b) Alma did not visit Edna before Dina.
Does it mean, 2) Alma visited Edna before Cleo or Dina but not before both Cleo and Dina.