Can we draw the following hypothesis from the context (see options)? 

Context:

The Kathlamet people are a tribe of Native American people with a historic homeland along the Columbia River in what is today southwestern Washington state. The Kathlamet people originally spoke the Kathlamet language, a dialect of the Chinookan language. They were also called "Guasámas, or Guithlamethl, by the Clackamas", and "Kwillu'chini, by the Chinook."

Hypothesis: The tribe that lived in the southwestern Washington state spoke many languages, including the Kathlamet and recently moved along the Columbia River.
Choices:
(1). Yes
(2). It's impossible to say
(3). No
(1).