 Complete the following phrase:  João Abel Manta is of particular importance in the area of the cartoon, and is considered to be the most extraordinary case of Portuguese cartoon drawing of the 20th century, only comparable to Bordalo Pinheiro himself. Mantas activity as a cartoonist was from approximately 1954 to 1991, being particularly intense between 1969 and 1976. For about seven years his cartoons  dealing critically and deeply ironically with Portuguese reality  were published regularly in newspapers like the Diário de Lisboa, Diário de Notícias, and O Jornal. Mantas cartoons marked the period before the 