Unable to compile LilyPond input file:

line 36 - column 15:
string outside of text script or \lyricmode
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line 36 - column 16:
not a note name: a
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line 36 - column 17:
not a duration
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line 37 - column 16:
string outside of text script or \lyricmode
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line 37 - column 17:
not a note name: yes
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line 50 - column 20:
EOF found inside string
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line 50 - column 20:
syntax error, unexpected end of input