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After a major expansion program in the 1980s that led to financial difficulties , in 1991 Lavalin merged with its long-time competitor , Surveyer , Nenniger & Chenevert Consulting Engineers ( SNC ) , to become today 's SNC-Lavalin , forming one of the ten largest engineering firms in the world .
 SNC-Lavalin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 SNC-Lavalin