According to tradition, they founded Tenochtitlan ( "Place of the High Priest Tenoch" ) after much wandering when they saw on an island in Lake Texcoco the sign that their god Huitzilopochtli had indicated -- an eagle perched on a cactus, eating a serpent .
Question: They saw an eagle perched on a cactus eating a serpent.
yes

Glue-sniffing and other forms of solvent abuse are being overlooked in the fight against drugs, according to a new report.
Question: Glue-sniffing is common among youngsters.
no

Their work has stimulated research into microbes as possible reasons for other chronic inflammatory conditions, such as Crohn's disease, ulcerative colitis, rheumatoid arthritis and atherosclerosis, the Nobel assembly said.
Question: Rheumatoid arthritis is caused by microbes.
no