user: How is data engineering different from data science?

assistant: Data Engineering occurs before data science in the data lifecycle. Data can be generated from various sources and this raw data may be structured, semi structured or even unstructured. To make sense of this data, data has to be ingested and transformed. This is when data engineering comes into picture. Data engineering includes the process of extracting the raw data, ingesting data into a system like a data lake, transforming the data for business needs and finally loading it into a table. This is commonly known as ELT (Extract-Load-Transform). ETL (Extract-Transform-Load) is also possible where transformation happens before the loading stage.
Data Science and Analytics is the next step in the data lifecycle. Once the data needed for specific business need is available, data scientists use this data to run machine learning models to find the most accurate model. This data is available to the data scientists in the form of tables. Data analysts also use this data to do some exploratory analysis and create dashboards. 
In essence, the data lifecycle would look as follows:
Raw data from different sources -> Data Engineering -> Data Science and Analytics

user: What is the best electrical system for RVs?

assistant: There have been recent improvements in RV electrical systems. At the core, RVs run off “house batteries”, or large batteries that power the RV portion of the vehicle. There are several types of batteries available, and several ways of powering these batteries. The two main types of batteries are lead acid, and lithium. Lithium batteries are newer technology and will not be found in older RVs unless retrofitted. Lithium batteries have a larger charge capacity and can discharge safely further than lead acid batteries. However, lead acid batteries are cheaper. There are several ways of charging these batteries. The most common is a plug that provides either 30A or 50A of power, depending on the RV size. Most RVs also have generators, but generators are noisy and require either gas or diesel to run. Some RVs with lithium batteries (or more rarely, lead acid), have a second alternator installed that charges the batteries while driving. Finally, solar power is a popular option. Solar power is completely quiet and renewable, but can be expensive to install and is slower to charge batteries. Most RVs have a combination of the above, and consumers choose the system that best fits their lifestyle.

user: Given this paragraph about the NFL, in what year was the Super Bowl first held?

assistant: 1967