premise: Phacelia coerulea is a species of phacelia known by the common name skyblue phacelia. It is native to the California and the Southwestern United States and northern Mexico, where it grows in desert and plateau habitat types, such as scrub and woodland.
hypothesis: Phacelia coerulea can survive in areas that receive little rainfall. 
reason: It grows in desert areas, which by definition receives little rainfall. Perhaps the AI system doesn't know the definition of a desert. 