Here's a short story:

Somalis (Somali: Soomaali, Arabic: صومال‎) are an ethnic group inhabiting the Horn of Africa (Somali Peninsula). The overwhelming majority of Somalis speak the Somali language, which is part of the Cushitic branch of the Afro-Asiatic family. They are predominantly Sunni Muslim. Ethnic Somalis number around 16-20 million and are principally concentrated in Somalia (around 12.3 million), Ethiopia (4.6 million), Kenya (2.4 million), and Djibouti (464,600), with many also residing in parts of the Middle East, North America and Europe. 

Irir Samaale, the oldest common ancestor of several Somali clans, is generally regarded as the source of the ethnonym Somali. The name "Somali" is, in turn, held to be derived from the words soo and maal, which together mean "go and milk" — a reference to the ubiquitous pastoralism of the Somali people. Another plausible etymology proposes that the term Somali is derived from the Arabic for "wealthy" (dhawamaal), again referring to Somali riches in livestock. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: Where do the people live?
Guess: the Horn of Africa

Question: What are they known as?
Guess: Somalis

Question: Do they all talk very differently?
Guess: no

Question: What dialect do the mostly use?
Guess: Somali

Question: What is that related to?
Guess: Afro-Asiatic family

Question: Which extension of that?
Guess: the Cushitic branch

Question: What is thought of as the origin?
Guess: Irir Samaale

Question: How many terms make up the origin of Somali?
Guess: Two

Question: And they are?
Guess: soo and maal

Question: And they stand for?
Guess: "go and milk"

Now answer the following question in the same format.

Question: What does that refer to?

pastoralism