Question: What country is in the middle of the source of the warm moist air mass over the Andes in the country where Canto de amor's screenwriter is a citizen?

<P0-S0> Ceriani made almost 50 film appearances in Argentina between 1938 and 1959 appearing in films such as the 1942 Julio Irigoyen film "Academia El Tango Argentino". <SEP> <P1-S0> Although the centre and the eastern parts of the country are mostly flat, the west is mountainous. <P1-S1> Both the Andes and Sierras Pampeanas affect the climate of Argentina, leading to differences in temperature, pressure, and spatial distribution of precipitation depending on the topography and altitude. <P1-S2> Here, the Andes exert an important influence on the climate. <P1-S3> Owing to the higher altitudes of the Andes north of 40 S, they completely block the normal westerly flow, preventing low pressure systems containing moisture from the Pacific Ocean from coming in. <P1-S4> Thus, much of Argentina north of 40 S is dominated by wind circulation patterns from the South Atlantic High. <P1-S5> South of 40 S, the Andes are lower in altitude, allowing much of Patagonia to be dominated by westerly winds and air masses from the Pacific Ocean. <P1-S6> However, the north -- south orientation of the Andes creates a barrier for humid air masses originating from the Pacific Ocean. <P1-S7> This is because they force these air masses upwards, cooling adiabactically. <P1-S8> Most of the moisture is dropped on the Chilean side, causing abundant precipitation and cloudiness while on the Argentine side, the air warms adiabatically, causing it to become drier as it descends. <P1-S9> Thus, an extensive rain -- shadow is present in much of Patagonia, causing it to receive very little precipitation. <P1-S10> The Sierras Pampeanas influences the climate on a much smaller scale than the Andes. <SEP> <P2-S0> It is based on a tango with music by Osvaldo Fresedo. <P2-S1> Canto de amor is a 1940 Argentine romantic musical drama film, directed and written by Julio Irigoyen. <SEP> <P3-S0> tropical and equatorial air masses are hot as they develop over lower latitudes. <P3-S1> those that develop over land (continental) are drier and hotter than those that develop over oceans, and travel poleward on the western periphery of the subtropical ridge. <P3-S2> maritime tropical air masses are sometimes referred to as trade air masses. <P3-S3> monsoon air masses are moist and unstable. <P3-S4> superior air masses are dry, and rarely reach the ground. <P3-S5> they normally reside over maritime tropical air masses, forming a warmer and drier layer over the more moderate moist air mass below, forming what is known as a trade wind inversion over the maritime tropical air mass. <P3-S6> continental polar air masses (cp) are air masses that are cold and dry due to their continental source region. <P3-S7> continental polar air masses that affect north america form over interior canada. <P3-S8> continental tropical air masses (ct) are a type of tropical air produced by the subtropical ridge over large areas of land and typically originate from low - latitude deserts such as the sahara desert in northern africa, which is the major source of these air masses. <P3-S9> other less important sources producing ct air masses are the arabian peninsula, the central arid / semi-arid part of australia and deserts lying in the southwestern united states. <P3-S10> continental tropical air masses are extremely hot and dry. <SEP> <P4-S0> Micronesia, which lies north of the equator and west of the International Date Line, includes the Mariana Islands in the northwest, the Caroline Islands in the center, the Marshall Islands to the west and the islands of Kiribati in the southeast. <P4-S1> This ocean has most of the islands in the world. <P4-S2> There are about 25,000 islands in the Pacific Ocean. <P4-S3> The islands entirely within the Pacific Ocean can be divided into three main groups known as Micronesia, Melanesia and Polynesia. <SEP> <P5-S0> malawi (, or ; or [maláwi]), officially the republic of malawi, is a landlocked country in southeast africa that was formerly known as nyasaland. <P5-S1> it is bordered by zambia to the northwest, tanzania to the northeast, and mozambique on the east, south and west. <P5-S2> malawi spans over and has an estimated population of (as of july ). <P5-S3> lake malawi takes up about a third of malawi's area. <P5-S4> its capital is lilongwe, which is also malawi's largest city; the second largest is blantyre, the third largest is mzuzu and the fourth largest is its old capital zomba. <P5-S5> the name malawi comes from the maravi, an old name of the nyanja people that inhabit the area. <P5-S6> the country is also nicknamed ""the warm heart of africa"" because of the friendliness of the people.