user: How does Spark relate to Apache Hadoop?

assistant: Spark is a fast and general processing engine compatible with Hadoop data. It can run in Hadoop clusters through YARN or Spark's standalone mode, and it can process data in HDFS, HBase, Cassandra, Hive, and any Hadoop InputFormat. It is designed to perform both batch processing (similar to MapReduce) and new workloads like streaming, interactive queries, and machine learning.

user: What would be a first date option in Boston?

assistant: There are many options for first dates in Boston. You could go for a nice walk in the Boston Common and grab a coffee/tea somewhere nearby. You could go to the Boston Aquarium and walk along the water afterwards. You could go to Seaport and spend time in the indoor mini golf spot. You could also wander around Quincy market and grab a bite to eat and then visit the Sam Adams brewery. Lastly, you could go for a walk along the esplanade and grab a drink and Night Shift brewery if the weather is nice.

user: Give me an overview of the rivalry between the Celtics and Lakers.

assistant: The Celtics-Lakers rivalry is an NBA(National Basketball Association) rivalry between the Boston Celtics and the Los Angeles Lakers. They are two of the most storied NBA franchises, and have met a record 12 times in the NBA finals. The first meeting in the finals between them was in 1959, and the latest was in 2010. Both teams are tied for the highest number of NBA championships at 17, and account for 34 of the 72 total NBA championships. The rivalry peaked in the 60s and 90, when the teams faced each other in the finals 6 times in the 60s and 3 times in the 90s.