IN: The Waterloo & City line (colloquially known as The Drain) is a London Underground line that runs between Waterloo and Bank with no intermediate stops. Its primary traffic consists of commuters from south-west London, Surrey and Hampshire arriving at Waterloo main line station and travelling forward to the City of London financial district, and for this reason the line does not normally operate on Sundays.
is waterloo and city line open on sunday?

OUT: no

IN: Although not a member of either the European Union or the European Economic Area, the Vatican maintains an open border with Italy and is treated as part of the Schengen Area. Since the Vatican City is only accessible via Italy entrance is not possible without entering the Schengen Area first and therefore Schengen visa rules apply de facto. Nevertheless, Vatican City doesn't have any tourist accommodation (hotels or rental apartments), it's therefore virtually impossible to actually stay overnight as a tourist.
do you need a visa for the vatican city?

OUT: yes

IN: The term computer language is sometimes used interchangeably with programming language. However, the usage of both terms varies among authors, including the exact scope of each. One usage describes programming languages as a subset of computer languages. In this vein, languages used in computing that have a different goal than expressing computer programs are generically designated computer languages. For instance, markup languages are sometimes referred to as computer languages to emphasize that they are not meant to be used for programming.
are programming languages a subset of computer languages?

OUT: no

IN: Coronary artery disease (CAD), also known as ischemic heart disease (IHD), refers to a group of diseases which includes stable angina, unstable angina, myocardial infarction, and sudden cardiac death. It is within the group of cardiovascular diseases of which it is the most common type. A common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Occasionally it may feel like heartburn. Usually symptoms occur with exercise or emotional stress, last less than a few minutes, and improve with rest. Shortness of breath may also occur and sometimes no symptoms are present. In many cases, the first sign is a heart attack. Other complications include heart failure or an abnormal heartbeat.
is coronary artery disease and ischemic heart disease the same thing?

OUT:
yes