Drupal 7.5 and Search API

When creating an index per the directions here…https://www.drupal.org/node/1251376 all it says for item type is Item type
Select the type of data you want to index and search with this index. This is the most important setting and cannot be changed afterwards.

The available item types are:
Autocomplete search
Saved search settings
Saved Sewarch
Taxonomy item
Taxonomy vocab
Search Server
Search Index
Search page
Multiple types

What should i choose for item type if i want to use the content in Solr ( crawled from a non drupal website) as a search page in drupal?
I will not be indexing any drupal content.

Drupal version: 

Source: https://www.drupal.org/taxonomy/term/22/feed