Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.

[Q]: Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms ' activities ( energy transformation ) . This chemical energy is stored in carbohydrate molecules , such as sugars , which are synthesized from carbon dioxide and water -- hence the name photosynthesis , from the Greek φῶς , phōs , `` light '' , and σύνθεσις , synthesis , `` putting together '' . In most cases , oxygen is also released as a waste product . Most plants , most algae , and cyanobacteria perform photosynthesis ; such organisms are called photoautotrophs . Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth 's atmosphere , and supplies all of the organic compounds and most of the energy necessary for life on Earth .
[A]: Photosynthesis


[Q]: `` Nobody to Blame '' is a song recorded by American country music artist Chris Stapleton . The song was released in November 2015 as the singer 's third single overall . Stapleton co-wrote the song with Barry Bales and Ronnie Bowman . It became Stapleton 's first top 10 single on the US Country Airplay chart . `` Nobody to Blame '' won Song of the Year at the ACM Awards .
[A]: Nobody to Blame


[Q]: Porter Airlines is a regional airline headquartered at Billy Bishop Toronto City Airport on the Toronto Islands in Toronto , Ontario , Canada . Owned by Porter Aviation Holdings , formerly known as REGCO Holdings Inc. , Porter operates regularly scheduled flights between Toronto and locations in Canada and the United States using Canadian - built Bombardier Dash - 8 Q 400 turboprop aircraft .
[A]:
Porter Airlines