you are likely to find Note in/at/on Mobile. Note is a synonym of Remark. Observation is a type of Remark. Observation is related to Telescope. 
Do is related to Hear. Hear is a synonym of Try. Try is a synonym of Test. 
Mobile <--AtLocation-- Note <--Synonym--> Remark <--IsA-- Observation <--RelatedTo--> Telescope 
Do <--RelatedTo--> Hear <--Synonym--> Try <--Synonym--> Test 