Question: The smallest of Hawaii's eight main volcanic islands which is home to the rare flowering plant, Euphorbia skottsvergii, get's how many cm of rainfall on average annually?
Sentence (from "Kahoolawe"): Kahoʻ olawe is located about 7 mi southwest of Maui and also southeast of Lanai, and it is 11 mi long by 6.0 mi wide, with a total land area of 44.97 sqmi .
Relevant evidence: No