What is the fine-grained topic of the following text: "So since starting with my current dispensary, Hemlock was one of the first strains that caught my eye, after doing a little more research i ended up choosing this strain because of the genetics with two famous power houses Durban Poison an extremely energetic sativa crossed with the ever so strong and trippy LA Confidential.. Only return the topic.
Choosing the Hemlock strain at a dispensary based on its genetic combination of Durban Poison and LA Confidential.