c'est

1. it is (used to define the preceding word)
2. it is (used to introduce a focus)
3. this is

sa

his, her, its, their, one's

troisième

• Adj

  third

• Noun

participation

participation

à la

1. Used other than figuratively or idiomatically: see à, la.
2. a la, in the style or manner of (with a feminine singular adjective or a proper noun)

Coupe

Crater (a constellation)

la

• Article

  the (definite article)

• Pron
• Noun

à

• Character

  A with grave accent, a letter used in French mostly to distinguish some homographs and in transliteration.

• Prep