Given the statement that rich Filipinos live in beautiful houses. Mr. Santos, a Filipino, lives in a beautiful house. What can be concluded about Mr. Santos?

The conclusion about Mr. Santos can be classified as "cannot be certain" because the initial statement indicates a relationship between being rich and living in a beautiful house but does not assert that all residents of beautiful houses are rich. While Mr. Santos lives in a beautiful house, the statement does not provide enough information to determine his wealth. It is entirely possible for someone who is not rich to live in a beautiful house, perhaps due to factors such as inheritance, a mortgage, or other circumstances that allow them to occupy such a home without being wealthy. Therefore, we cannot definitively conclude that Mr. Santos is rich based solely on the information provided.